CVE-2012-2131

CVE-2012-2131 is a high-severity vulnerability in Openssl with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 17% (97th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Openssl
• Published: 2012-04-24
• Last modified: 2026-06-16

Description

Multiple integer signedness errors in crypto/buffer/buffer.c in OpenSSL 0.9.8v allow remote attackers to conduct buffer overflow attacks, and cause a denial of service (memory corruption) or possibly have unspecified other impact, via crafted DER data, as demonstrated by an X.509 certificate or an RSA public key. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-2110.

Frequently asked questions

What is CVE-2012-2131?

Multiple integer signedness errors in crypto/buffer/buffer.c in OpenSSL 0.9.8v allow remote attackers to conduct buffer overflow attacks, and cause a denial of service (memory corruption) or possibly have unspecified other impact, via crafted DER data, as demonstrated by an X.509 certificate or an RSA public key. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-2110.

How severe is CVE-2012-2131?

CVE-2012-2131 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2012-2131 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-2131?

CVE-2012-2131 affects Openssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-2131?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2012-2131 published?

CVE-2012-2131 was published on 2012-04-24 and last updated on 2026-06-16.

References

• http://cvs.openssl.org/chngview?cn=22479
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
• http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00014.html
• http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00015.html
• http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00007.html
• http://marc.info/?l=bugtraq&m=133728068926468&w=2
• http://marc.info/?l=bugtraq&m=134039053214295&w=2
• http://secunia.com/advisories/48895
• http://secunia.com/advisories/48956
• http://secunia.com/advisories/57353
• http://support.apple.com/kb/HT5784
• http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
• http://www.debian.org/security/2012/dsa-2454
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:064
• http://www.openssl.org/news/secadv_20120424.txt
• http://www.openwall.com/lists/oss-security/2012/04/24/1
• http://www.securityfocus.com/bid/53212
• http://www.securitytracker.com/id?1026957
• http://www.ubuntu.com/usn/USN-1428-1
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75099

Affected products (1)

• cpe:2.3:a:openssl:openssl:0.9.8v:*:*:*:*:*:*:*

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