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CVE-2008-5161

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through...

2.6 LowPublic exploitFix available

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Exploit likelihood

18.6%Up 14.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

CVE List 3.7

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
CVE-2008-5161
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-329
Updated
2026-11-02
EUVDEUVD-2008-5139 3.7

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
EUVD-2008-5139
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-c9pj-mwph-2xjm 3.7

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through...

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
GHSA-c9pj-mwph-2xjm
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200, CWE-329
Updated
2026-11-02
NVD 3.7

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
CVE-2008-5161
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0
2.6 LowAV:N/AC:H/Au:N/C:P/I:N/A:N
Weakness
CWE-200, CWE-329
Updated
2026-11-02
OSVDEBIAN-CVE-2008-5161 3.7

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
DEBIAN-CVE-2008-5161
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSV No score

Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and ConnectSecure 6.0 through 6.0.4; Server for Linux on IBM System z 6.0.4; Server for IBM z/OS 5.5.1 and earlier, 6.0.0, and 6.0.1; and Client 4.0-J through 4.3.3-J and 4.0-K through 4.3.10-K; and (2) OpenSSH 4.7p1 and possibly other versions, when using a block cipher algorithm in Cipher Block Chaining (CBC) mode, makes it easier for remote attackers to recover certain plaintext data from an arbitrary block of ciphertext in an SSH session via unknown vectors.

Record
CVE-2008-5161
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openssh
Debian:12
 before 1:5.1p1-5
1:5.1p1-5
openssh
Debian:13
 before 1:5.1p1-5
1:5.1p1-5
openssh
Debian:14
 before 1:5.1p1-5
1:5.1p1-5
openssh
Red Hat:enterprise_linux:5::client
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-askpass
Red Hat:enterprise_linux:5::client
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-clients
Red Hat:enterprise_linux:5::client
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-server
Red Hat:enterprise_linux:5::client
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh
Red Hat:enterprise_linux:5::server
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-askpass
Red Hat:enterprise_linux:5::server
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-clients
Red Hat:enterprise_linux:5::server
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:4.3p2-36.el5
0:4.3p2-36.el5
openssh-server
Red Hat:enterprise_linux:5::server
 before 0:4.3p2-36.el5
0:4.3p2-36.el5

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
MetasploitSSH Version Scanner
PoC in GitHubtalha3117/OpenSSH-4.7p1-CVE-2008-5161-Exploit2025-10-08

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, Metasploit, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2008-5161 is a low vulnerability (CVSS 2.6) in Openbsd Openssh, published November 19, 2008. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 18.6%, the 97th percentile. Fixed in openssh 1:5.1p1-5.

References

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