Vulnerability Monitor

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CVE-2012-4559

Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.

Published

2012-11-30T22:55:01.643

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-399
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application libssh libssh ≤ 0.5.2 Yes
Application libssh libssh 0.4.7 Yes
Application libssh libssh 0.4.8 Yes
Application libssh libssh 0.5.0 Yes
Application libssh libssh 0.5.0 Yes
Application libssh libssh 0.5.1 Yes
References