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    CVE-2010-2939

    Double free vulnerability in the ssl3_get_key_exchange function in the OpenSSL client (ssl/s3_clnt.c) in OpenSSL 1.0.0a, 0.9.8, 0.9.7, and possibly other versions, when using ECDH, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted private key with an invalid prime. NOTE: some sources refer to this as a use-after-free issue.

    Published:Aug 7, 2010
    Last Modified:Apr 11, 2025
    EPS:Aug 17, 2010
    EPSS Score:0.1138
    CVSS Score:4.3

    Affected Products

    Vendor
    Openssl
    Product
    Openssl

    Exploits

    https://www.exploit-db.com/exploits/34427

    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

    http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00005.html
    http://marc.info/?l=bugtraq&m=130331363227777&w=2
    http://seclists.org/fulldisclosure/2010/Aug/84
    http://secunia.com/advisories/40906
    http://secunia.com/advisories/41105
    http://secunia.com/advisories/42309
    http://secunia.com/advisories/42413
    http://secunia.com/advisories/43312
    http://security.FreeBSD.org/advisories/FreeBSD-SA-10:10.openssl.asc
    http://securitytracker.com/id?1024296
    http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.668793
    http://www.debian.org/security/2010/dsa-2100
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28043.html
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28045.html
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28049.html
    http://www.openwall.com/lists/oss-security/2010/08/11/6
    http://www.securityfocus.com/archive/1/516397/100/0/threaded
    http://www.ubuntu.com/usn/USN-1003-1
    http://www.vmware.com/security/advisories/VMSA-2011-0003.html
    http://www.vupen.com/english/advisories/2010/2038
    http://www.vupen.com/english/advisories/2010/2229
    http://www.vupen.com/english/advisories/2010/3077
    http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00005.html
    http://marc.info/?l=bugtraq&m=130331363227777&w=2
    http://seclists.org/fulldisclosure/2010/Aug/84
    http://secunia.com/advisories/40906
    http://secunia.com/advisories/41105
    http://secunia.com/advisories/42309
    http://secunia.com/advisories/42413
    http://secunia.com/advisories/43312
    http://security.FreeBSD.org/advisories/FreeBSD-SA-10:10.openssl.asc
    http://securitytracker.com/id?1024296
    http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.668793
    http://www.debian.org/security/2010/dsa-2100
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28043.html
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28045.html
    http://www.mail-archive.com/openssl-dev%40openssl.org/msg28049.html
    http://www.openwall.com/lists/oss-security/2010/08/11/6
    http://www.securityfocus.com/archive/1/516397/100/0/threaded
    http://www.ubuntu.com/usn/USN-1003-1
    http://www.vmware.com/security/advisories/VMSA-2011-0003.html
    http://www.vupen.com/english/advisories/2010/2038
    http://www.vupen.com/english/advisories/2010/2229
    http://www.vupen.com/english/advisories/2010/3077

    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