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    CVE-2006-2937

    OpenSSL 0.9.7 before 0.9.7l and 0.9.8 before 0.9.8d allows remote attackers to cause a denial of service (infinite loop and memory consumption) via malformed ASN.1 structures that trigger an improperly handled error condition.

    Published:Sep 28, 2006
    Last Modified:Apr 23, 2026
    EPS:Sep 28, 2006
    EPSS Score:0.05111
    CVSS Score:7.8

    Affected Products

    Vendor
    Openssl
    Product
    Openssl
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Network Satellite

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-75803 (CVSS 9.1) — Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without ve…
    CVE-2026-63075 (CVSS 7.5) — Issue summary: When OpenSSL processes QUIC traffic from a peer that repeatedly sends ack-eliciting packets whi…
    CVE-2026-63072 (CVSS 7.5) — Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key s…
    CVE-2026-54874 (CVSS 7.5) — Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to b…
    CVE-2026-14457 (CVSS 7.5) — Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the p…
    CVE-2026-63076 (CVSS 7.5) — Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parame…
    CVE-2026-63074 (CVSS 5.9) — Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) s…
    CVE-2026-63073 (CVSS 9.8) — Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directl…
    CVE-2026-18798 (CVSS 7.5) — Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for i…
    CVE-2026-14456 (CVSS 7.5) — Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unkn…

    References

    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2008-007.txt.asc
    ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
    http://docs.info.apple.com/article.html?artnum=304829
    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01118771
    http://issues.rpath.com/browse/RPL-613
    http://itrc.hp.com/service/cki/docDisplay.do?docId=c00805100
    http://itrc.hp.com/service/cki/docDisplay.do?docId=c00849540
    http://kolab.org/security/kolab-vendor-notice-11.txt
    http://lists.apple.com/archives/security-announce/2006/Nov/msg00001.html
    http://lists.grok.org.uk/pipermail/full-disclosure/2006-September/049715.html
    http://lists.vmware.com/pipermail/security-announce/2008/000008.html
    http://marc.info/?l=bind-announce&m=116253119512445&w=2
    http://marc.info/?l=bugtraq&m=130497311408250&w=2
    http://openbsd.org/errata.html#openssl2
    http://openvpn.net/changelog.html
    http://secunia.com/advisories/22094
    http://secunia.com/advisories/22116
    http://secunia.com/advisories/22130
    http://secunia.com/advisories/22165
    http://secunia.com/advisories/22166
    http://secunia.com/advisories/22172
    http://secunia.com/advisories/22186
    http://secunia.com/advisories/22193
    http://secunia.com/advisories/22207
    http://secunia.com/advisories/22212
    http://secunia.com/advisories/22216
    http://secunia.com/advisories/22220
    http://secunia.com/advisories/22240
    http://secunia.com/advisories/22259
    http://secunia.com/advisories/22260
    http://secunia.com/advisories/22284
    http://secunia.com/advisories/22298
    http://secunia.com/advisories/22330
    http://secunia.com/advisories/22385
    http://secunia.com/advisories/22460
    http://secunia.com/advisories/22487
    http://secunia.com/advisories/22544
    http://secunia.com/advisories/22626
    http://secunia.com/advisories/22671
    http://secunia.com/advisories/22758
    http://secunia.com/advisories/22772
    http://secunia.com/advisories/22799
    http://secunia.com/advisories/23038
    http://secunia.com/advisories/23131
    http://secunia.com/advisories/23155
    http://secunia.com/advisories/23280
    http://secunia.com/advisories/23309
    http://secunia.com/advisories/23340
    http://secunia.com/advisories/23351
    http://secunia.com/advisories/23680
    http://secunia.com/advisories/23915
    http://secunia.com/advisories/24930
    http://secunia.com/advisories/24950
    http://secunia.com/advisories/25889
    http://secunia.com/advisories/26329
    http://secunia.com/advisories/30124
    http://secunia.com/advisories/31492
    http://secunia.com/advisories/31531
    http://security.freebsd.org/advisories/FreeBSD-SA-06:23.openssl.asc
    http://security.gentoo.org/glsa/glsa-200610-11.xml
    http://securitytracker.com/id?1016943
    http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.676946
    http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102668-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102747-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-200585-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-201534-1
    http://support.attachmate.com/techdocs/2374.html
    http://support.avaya.com/elmodocs2/security/ASA-2006-220.htm
    http://support.avaya.com/elmodocs2/security/ASA-2006-260.htm
    http://www.arkoon.fr/upload/alertes/37AK-2006-06-FR-1.1_FAST360_OPENSSL_ASN1.pdf
    http://www.arkoon.fr/upload/alertes/41AK-2006-08-FR-1.1_SSL360_OPENSSL_ASN1.pdf
    http://www.cisco.com/en/US/products/hw/contnetw/ps4162/tsd_products_security_response09186a008077af1b.html
    http://www.cisco.com/warp/public/707/cisco-sr-20061108-openssl.shtml
    http://www.debian.org/security/2006/dsa-1185
    http://www.f-secure.com/security/fsc-2006-6.shtml
    http://www.gentoo.org/security/en/glsa/glsa-200612-11.xml
    http://www.kb.cert.org/vuls/id/247744
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:172
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:177
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:178
    http://www.novell.com/linux/security/advisories/2006_24_sr.html
    http://www.novell.com/linux/security/advisories/2006_58_openssl.html
    http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.021-openssl.html
    http://www.openssl.org/news/secadv_20060928.txt
    http://www.osvdb.org/29260
    http://www.redhat.com/support/errata/RHSA-2006-0695.html
    http://www.redhat.com/support/errata/RHSA-2008-0629.html
    http://www.securityfocus.com/archive/1/447318/100/0/threaded
    http://www.securityfocus.com/archive/1/447393/100/0/threaded
    http://www.securityfocus.com/archive/1/456546/100/200/threaded
    http://www.securityfocus.com/archive/1/489739/100/0/threaded
    http://www.securityfocus.com/bid/20248
    http://www.securityfocus.com/bid/28276
    http://www.serv-u.com/releasenotes/
    http://www.trustix.org/errata/2006/0054
    http://www.ubuntu.com/usn/usn-353-1
    http://www.us-cert.gov/cas/techalerts/TA06-333A.html
    http://www.vmware.com/security/advisories/VMSA-2008-0005.html
    http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html
    http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html
    http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
    http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html
    http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html
    http://www.vmware.com/support/player/doc/releasenotes_player.html
    http://www.vmware.com/support/player2/doc/releasenotes_player2.html
    http://www.vmware.com/support/server/doc/releasenotes_server.html
    http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html
    http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html
    http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
    http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html
    http://www.vupen.com/english/advisories/2006/3820
    http://www.vupen.com/english/advisories/2006/3860
    http://www.vupen.com/english/advisories/2006/3869
    http://www.vupen.com/english/advisories/2006/3902
    http://www.vupen.com/english/advisories/2006/3936
    http://www.vupen.com/english/advisories/2006/4019
    http://www.vupen.com/english/advisories/2006/4036
    http://www.vupen.com/english/advisories/2006/4264
    http://www.vupen.com/english/advisories/2006/4327
    http://www.vupen.com/english/advisories/2006/4329
    http://www.vupen.com/english/advisories/2006/4401
    http://www.vupen.com/english/advisories/2006/4417
    http://www.vupen.com/english/advisories/2006/4750
    http://www.vupen.com/english/advisories/2006/4761
    http://www.vupen.com/english/advisories/2006/4980
    http://www.vupen.com/english/advisories/2007/0343
    http://www.vupen.com/english/advisories/2007/1401
    http://www.vupen.com/english/advisories/2007/2315
    http://www.vupen.com/english/advisories/2007/2783
    http://www.vupen.com/english/advisories/2008/0905/references
    http://www.vupen.com/english/advisories/2008/2396
    http://www.xerox.com/downloads/usa/en/c/cert_ESSNetwork_XRX07001_v1.pdf
    https://exchange.xforce.ibmcloud.com/vulnerabilities/29228
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10560
    https://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00967144
    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2008-007.txt.asc
    ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
    http://docs.info.apple.com/article.html?artnum=304829
    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01118771
    http://issues.rpath.com/browse/RPL-613
    http://itrc.hp.com/service/cki/docDisplay.do?docId=c00805100
    http://itrc.hp.com/service/cki/docDisplay.do?docId=c00849540
    http://kolab.org/security/kolab-vendor-notice-11.txt
    http://lists.apple.com/archives/security-announce/2006/Nov/msg00001.html
    http://lists.grok.org.uk/pipermail/full-disclosure/2006-September/049715.html
    http://lists.vmware.com/pipermail/security-announce/2008/000008.html
    http://marc.info/?l=bind-announce&m=116253119512445&w=2
    http://marc.info/?l=bugtraq&m=130497311408250&w=2
    http://openbsd.org/errata.html#openssl2
    http://openvpn.net/changelog.html
    http://secunia.com/advisories/22094
    http://secunia.com/advisories/22116
    http://secunia.com/advisories/22130
    http://secunia.com/advisories/22165
    http://secunia.com/advisories/22166
    http://secunia.com/advisories/22172
    http://secunia.com/advisories/22186
    http://secunia.com/advisories/22193
    http://secunia.com/advisories/22207
    http://secunia.com/advisories/22212
    http://secunia.com/advisories/22216
    http://secunia.com/advisories/22220
    http://secunia.com/advisories/22240
    http://secunia.com/advisories/22259
    http://secunia.com/advisories/22260
    http://secunia.com/advisories/22284
    http://secunia.com/advisories/22298
    http://secunia.com/advisories/22330
    http://secunia.com/advisories/22385
    http://secunia.com/advisories/22460
    http://secunia.com/advisories/22487
    http://secunia.com/advisories/22544
    http://secunia.com/advisories/22626
    http://secunia.com/advisories/22671
    http://secunia.com/advisories/22758
    http://secunia.com/advisories/22772
    http://secunia.com/advisories/22799
    http://secunia.com/advisories/23038
    http://secunia.com/advisories/23131
    http://secunia.com/advisories/23155
    http://secunia.com/advisories/23280
    http://secunia.com/advisories/23309
    http://secunia.com/advisories/23340
    http://secunia.com/advisories/23351
    http://secunia.com/advisories/23680
    http://secunia.com/advisories/23915
    http://secunia.com/advisories/24930
    http://secunia.com/advisories/24950
    http://secunia.com/advisories/25889
    http://secunia.com/advisories/26329
    http://secunia.com/advisories/30124
    http://secunia.com/advisories/31492
    http://secunia.com/advisories/31531
    http://security.freebsd.org/advisories/FreeBSD-SA-06:23.openssl.asc
    http://security.gentoo.org/glsa/glsa-200610-11.xml
    http://securitytracker.com/id?1016943
    http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.676946
    http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102668-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-102747-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-200585-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-201534-1
    http://support.attachmate.com/techdocs/2374.html
    http://support.avaya.com/elmodocs2/security/ASA-2006-220.htm
    http://support.avaya.com/elmodocs2/security/ASA-2006-260.htm
    http://www.arkoon.fr/upload/alertes/37AK-2006-06-FR-1.1_FAST360_OPENSSL_ASN1.pdf
    http://www.arkoon.fr/upload/alertes/41AK-2006-08-FR-1.1_SSL360_OPENSSL_ASN1.pdf
    http://www.cisco.com/en/US/products/hw/contnetw/ps4162/tsd_products_security_response09186a008077af1b.html
    http://www.cisco.com/warp/public/707/cisco-sr-20061108-openssl.shtml
    http://www.debian.org/security/2006/dsa-1185
    http://www.f-secure.com/security/fsc-2006-6.shtml
    http://www.gentoo.org/security/en/glsa/glsa-200612-11.xml
    http://www.kb.cert.org/vuls/id/247744
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:172
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:177
    http://www.mandriva.com/security/advisories?name=MDKSA-2006:178
    http://www.novell.com/linux/security/advisories/2006_24_sr.html
    http://www.novell.com/linux/security/advisories/2006_58_openssl.html
    http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.021-openssl.html
    http://www.openssl.org/news/secadv_20060928.txt
    http://www.osvdb.org/29260
    http://www.redhat.com/support/errata/RHSA-2006-0695.html
    http://www.redhat.com/support/errata/RHSA-2008-0629.html
    http://www.securityfocus.com/archive/1/447318/100/0/threaded
    http://www.securityfocus.com/archive/1/447393/100/0/threaded
    http://www.securityfocus.com/archive/1/456546/100/200/threaded
    http://www.securityfocus.com/archive/1/489739/100/0/threaded
    http://www.securityfocus.com/bid/20248
    http://www.securityfocus.com/bid/28276
    http://www.serv-u.com/releasenotes/
    http://www.trustix.org/errata/2006/0054
    http://www.ubuntu.com/usn/usn-353-1
    http://www.us-cert.gov/cas/techalerts/TA06-333A.html
    http://www.vmware.com/security/advisories/VMSA-2008-0005.html
    http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html
    http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html
    http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
    http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html
    http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html
    http://www.vmware.com/support/player/doc/releasenotes_player.html
    http://www.vmware.com/support/player2/doc/releasenotes_player2.html
    http://www.vmware.com/support/server/doc/releasenotes_server.html
    http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html
    http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html
    http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
    http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html
    http://www.vupen.com/english/advisories/2006/3820
    http://www.vupen.com/english/advisories/2006/3860
    http://www.vupen.com/english/advisories/2006/3869
    http://www.vupen.com/english/advisories/2006/3902
    http://www.vupen.com/english/advisories/2006/3936
    http://www.vupen.com/english/advisories/2006/4019
    http://www.vupen.com/english/advisories/2006/4036
    http://www.vupen.com/english/advisories/2006/4264
    http://www.vupen.com/english/advisories/2006/4327
    http://www.vupen.com/english/advisories/2006/4329
    http://www.vupen.com/english/advisories/2006/4401
    http://www.vupen.com/english/advisories/2006/4417
    http://www.vupen.com/english/advisories/2006/4750
    http://www.vupen.com/english/advisories/2006/4761
    http://www.vupen.com/english/advisories/2006/4980
    http://www.vupen.com/english/advisories/2007/0343
    http://www.vupen.com/english/advisories/2007/1401
    http://www.vupen.com/english/advisories/2007/2315
    http://www.vupen.com/english/advisories/2007/2783
    http://www.vupen.com/english/advisories/2008/0905/references
    http://www.vupen.com/english/advisories/2008/2396
    http://www.xerox.com/downloads/usa/en/c/cert_ESSNetwork_XRX07001_v1.pdf
    https://exchange.xforce.ibmcloud.com/vulnerabilities/29228
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10560
    https://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00967144

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High