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CVE-2008-5077

19
FAUCET Score

CVE-2008-5077 describes a vulnerability in OpenSSL versions 0.9.8i and earlier, where improper checking of the EVP_VerifyFinal function's return value allows remote attackers to bypass certificate chain validation for DSA and ECDSA keys through malformed SSL/TLS signatures. With a CVSS score of 5.8, this medium-severity vulnerability has a network attack vector and medium attack complexity, potentially leading to partial integrity and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.8hCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
0.9.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
0.9.2bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*
0.9.3CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.3:*:*:*:*:*:*:*
0.9.3aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.3a:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.15%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0515 is in the 90th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: openssl-0:0.9.6b-49
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: openssl095a-0:0.9.5a-34
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: openssl096-0:0.9.6-34
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: openssl-0:0.9.7a-33.25
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: openssl096b-0:0.9.6b-16.49
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssl-0:0.9.7a-43.17.el4_7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssl096b-0:0.9.6b-22.46.el4_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8b-10.el5_2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a-0:0.9.7a-9.el5_2.1
View patch

Vendor Advisories (1)

redhatCVE-2008-5077Important

OpenSSL Incorrect checks for malformed signatures

Jan 7, 2009

References

lists.apple.com / archives/security-announce/2009/May/msg00002.html
lists.opensuse.org / opensuse-security-announce/2011-07/msg00013.html
lists.opensuse.org / opensuse-security-announce/2011-07/msg00014.html
marc.info
marc.info
marc.info
secunia.com / advisories/33338
Vendor Advisory
secunia.com / advisories/33394
secunia.com / advisories/33436
Vendor Advisory
secunia.com / advisories/33557
Vendor Advisory
secunia.com / advisories/33673
Vendor Advisory
secunia.com / advisories/33765
Vendor Advisory
secunia.com / advisories/34211
Vendor Advisory
secunia.com / advisories/35074
Vendor Advisory
secunia.com / advisories/35108
Vendor Advisory
secunia.com / advisories/39005
Vendor Advisory
security.gentoo.org / glsa/glsa-200902-02.xml
slackware.com / security/viewer.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6380
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9155
sunsolve.sun.com / search/document.do
support.apple.com / kb/HT3549
support.avaya.com / elmodocs2/security/ASA-2009-038.htm
support.nortel.com / go/main.jsp
usn.ubuntu.com / 704-1
voodoo-circle.sourceforge.net / sa/sa-20090123-01.html
ocert.org / advisories/ocert-2008-016.html
openssl.org / news/secadv_20090107.txt
redhat.com / support/errata/RHSA-2009-0004.html
securityfocus.com / archive/1/499827/100/0/threaded
securityfocus.com / archive/1/502322/100/0/threaded
securityfocus.com / bid/33150
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-133A.html
US Government Resource
vmware.com / security/advisories/VMSA-2009-0004.html
vupen.com / english/advisories/2009/0040
Vendor Advisory
vupen.com / english/advisories/2009/0289
Vendor Advisory
vupen.com / english/advisories/2009/0362
Vendor Advisory
vupen.com / english/advisories/2009/0558
Vendor Advisory
vupen.com / english/advisories/2009/0904
Vendor Advisory
vupen.com / english/advisories/2009/0913
Vendor Advisory
vupen.com / english/advisories/2009/1297
Vendor Advisory
vupen.com / english/advisories/2009/1338
Vendor Advisory