CVE-2005-2969 — Algorithm Downgrade in Openssl

CWE-757 — Algorithm Downgrade11 documents10 sources
Severity
5.0MEDIUMNVD
EPSS
9.4%
top 7.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
OpensslDebian Openssl
Timeline
PublishedOct 18
Latest updateMay 3

Description

The SSL/TLS server implementation in OpenSSL 0.9.7 before 0.9.7h and 0.9.8 before 0.9.8a, when using the SSL_OP_MSIE_SSLV2_RSA_PADDING option, disables a verification step that is required for preventing protocol version rollback attacks, which allows remote attackers to force a client and server to use a weaker protocol than needed via a man-in-the-middle attack.

CVSS vector

AV:N/AC:L/C:N/I:P/A:NExploitability: 10.0 | Impact: 2.9

Affected Packages3 packages

▶debiandebian/openssl< openssl 0.9.8-3 (bookworm)
▶Debianopenssl/openssl< 0.9.8-3+3
▶NVDopenssl/openssl9 versions+8

Patches

Patch: www.openssl.org ↗Patch: www.openssl.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-h7wj-q4wv-chfq: The SSL/TLS server implementation in OpenSSL 0↗2022-05-03
▶
OSV
CVE-2005-2969: The SSL/TLS server implementation in OpenSSL 0↗2005-10-18
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📋Vendor Advisories

4
Ubuntu
SSL library vulnerability↗2005-10-14
▶
Cisco
OpenSSL Version Rollback and Weak Cryptographic Algorithm Vulnerabilities↗2005-10-12
▶
Red Hat
openssl mitm downgrade attack↗2005-10-11
▶
Debian
CVE-2005-2969: openssl - The SSL/TLS server implementation in OpenSSL 0.9.7 before 0.9.7h and 0.9.8 befor...↗2005
▶

📐Framework References

1
CWE
Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')↗
▶

💬Community

2
Bugzilla
CVE-2005-2969 openssl mitm downgrade attack↗2008-01-29
▶
Bugzilla
CVE-2005-2969 openssl mitm downgrade attack↗2008-01-29
▶