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    CVE-2009-0591

    The CMS_verify function in OpenSSL 0.9.8h through 0.9.8j, when CMS is enabled, does not properly handle errors associated with malformed signed attributes, which allows remote attackers to repudiate a signature that originally appeared to be valid but was actually invalid.

    Published:Mar 25, 2009
    Last Modified:Apr 23, 2026
    EPS:Mar 27, 2009
    EPSS Score:0.02422
    CVSS Score:2.6

    Affected Products

    Vendor
    Openssl
    Product
    Openssl

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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-SA2009-008.txt.asc
    http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
    http://marc.info/?l=bugtraq&m=124464882609472&w=2
    http://marc.info/?l=bugtraq&m=127678688104458&w=2
    http://secunia.com/advisories/34411
    http://secunia.com/advisories/34460
    http://secunia.com/advisories/34666
    http://secunia.com/advisories/35065
    http://secunia.com/advisories/35380
    http://secunia.com/advisories/35729
    http://secunia.com/advisories/36701
    http://secunia.com/advisories/42724
    http://secunia.com/advisories/42733
    http://securitytracker.com/id?1021907
    http://sourceforge.net/project/shownotes.php?release_id=671059&group_id=116847
    http://support.apple.com/kb/HT3865
    http://voodoo-circle.sourceforge.net/sa/sa-20090326-01.html
    http://www.openssl.org/news/secadv_20090325.txt
    http://www.osvdb.org/52865
    http://www.php.net/archive/2009.php#id2009-04-08-1
    http://www.securityfocus.com/bid/34256
    http://www.vupen.com/english/advisories/2009/0850
    http://www.vupen.com/english/advisories/2009/1020
    http://www.vupen.com/english/advisories/2009/1175
    http://www.vupen.com/english/advisories/2009/1548
    https://exchange.xforce.ibmcloud.com/vulnerabilities/49432
    https://kb.bluecoat.com/index?page=content&id=SA50
    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-008.txt.asc
    http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
    http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
    http://marc.info/?l=bugtraq&m=124464882609472&w=2
    http://marc.info/?l=bugtraq&m=127678688104458&w=2
    http://secunia.com/advisories/34411
    http://secunia.com/advisories/34460
    http://secunia.com/advisories/34666
    http://secunia.com/advisories/35065
    http://secunia.com/advisories/35380
    http://secunia.com/advisories/35729
    http://secunia.com/advisories/36701
    http://secunia.com/advisories/42724
    http://secunia.com/advisories/42733
    http://securitytracker.com/id?1021907
    http://sourceforge.net/project/shownotes.php?release_id=671059&group_id=116847
    http://support.apple.com/kb/HT3865
    http://voodoo-circle.sourceforge.net/sa/sa-20090326-01.html
    http://www.openssl.org/news/secadv_20090325.txt
    http://www.osvdb.org/52865
    http://www.php.net/archive/2009.php#id2009-04-08-1
    http://www.securityfocus.com/bid/34256
    http://www.vupen.com/english/advisories/2009/0850
    http://www.vupen.com/english/advisories/2009/1020
    http://www.vupen.com/english/advisories/2009/1175
    http://www.vupen.com/english/advisories/2009/1548
    https://exchange.xforce.ibmcloud.com/vulnerabilities/49432
    https://kb.bluecoat.com/index?page=content&id=SA50

    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