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Fencer Vulns
medium 5.8

CVE-2008-5077 json

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to byp…

published 2009-01-07 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-5056

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.1%
EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 0.9.8g-15

debian advisories DEBIAN-CVE-2008-5077

  • openssl RHEL 2.1 0.9.6b-49
  • openssl RHEL 3 0.9.7a-33.25
  • openssl RHEL 4 0.9.7a-43.17.el4_7.2
  • openssl RHEL 5 0.9.8b-10.el5_2.1
  • openssl096 RHEL 2.1 0.9.6-34
  • openssl095a RHEL 2.1 0.9.5a-34
  • openssl096b RHEL 3 0.9.6b-16.49
  • openssl096b RHEL 4 0.9.6b-22.46.el4_7

red hat advisories RHSA-2009:0004

  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11127-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2008-5077 updated

OpenSSL Incorrect checks for malformed signatures

  • Red Hat Desktop version 3 openssl 0.9.7a-33.25, openssl096b 0.9.6b-16.49, openssl-perl 0.9.7a-33.25 Red Hat Enterprise Linux (v. 5 server) openssl 0.9.8b-10.el5_2.1, openssl097a 0.9.7a-9.el5_2.1, openssl-perl 0.9.8b-10.el5_2.1 Red Hat Enterprise Linux AS (Advanced Server) version 2.1 openssl 0.9.6b-49, openssl096 0.9.6-34, openssl095a 0.9.5a-34, openssl-perl 0.9.6b-49 Red Hat Enterprise Linux AS version 3 openssl 0.9.7a-33.25, openssl096b 0.9.6b-16.49, openssl-perl 0.9.7a-33.25 Red Hat Enterprise Linux AS version 4 openssl 0.9.7a-43.17.el4_7.2, openssl096b 0.9.6b-22.46.el4_7, openssl-perl 0.9.7a-43.17.el4_7.2 Red Hat Enterprise Linux Desktop (v. 5 client) openssl 0.9.8b-10.el5_2.1, openssl097a 0.9.7a-9.el5_2.1, openssl-perl 0.9.8b-10.el5_2.1
    +9 more products
    Red Hat Enterprise Linux Desktop version 4 openssl 0.9.7a-43.17.el4_7.2, openssl096b 0.9.6b-22.46.el4_7, openssl-perl 0.9.7a-43.17.el4_7.2 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openssl 0.9.8b-10.el5_2.1, openssl-perl 0.9.8b-10.el5_2.1 Red Hat Enterprise Linux ES version 2.1 openssl 0.9.6b-49, openssl-perl 0.9.6b-49 Red Hat Enterprise Linux ES version 3 openssl 0.9.7a-33.25, openssl096b 0.9.6b-16.49, openssl-perl 0.9.7a-33.25 Red Hat Enterprise Linux ES version 4 openssl 0.9.7a-43.17.el4_7.2, openssl096b 0.9.6b-22.46.el4_7, openssl-perl 0.9.7a-43.17.el4_7.2 Red Hat Enterprise Linux WS version 2.1 openssl 0.9.6b-49, openssl-perl 0.9.6b-49 Red Hat Enterprise Linux WS version 3 openssl 0.9.7a-33.25, openssl096b 0.9.6b-16.49, openssl-perl 0.9.7a-33.25 Red Hat Enterprise Linux WS version 4 openssl 0.9.7a-43.17.el4_7.2, openssl096b 0.9.6b-22.46.el4_7, openssl-perl 0.9.7a-43.17.el4_7.2 Red Hat Linux Advanced Workstation 2.1 openssl 0.9.6b-49, openssl096 0.9.6-34, openssl095a 0.9.5a-34, openssl-perl 0.9.6b-49
    fixed: vendor fix RHSA-2009:0004

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.15% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:N/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.