CVE-2012-2110

high

Published 2012-04-19 · Modified 2026-04-29

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CVSS v3

—

CVSS v4 NEW

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not yet in upstream

VIR risk

8.5

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-18756 dos multiple verified

Tavis Ormandy · 2012-04-19

OpenSSL - ASN1 BIO Memory Corruption

Source code queued for fetch — refresh in a moment.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.0.1a-1`
sid	Fixed	`1.0.1a-1`
forky	Fixed	`1.0.1a-1`
bullseye	Fixed	`1.0.1a-1`
bookworm	Fixed	`1.0.1a-1`

Application impact

Vendor	Product	Versions
openssl	openssl	`1.0.0`
openssl	openssl	`1.0.0a`
openssl	openssl	`1.0.0b`
openssl	openssl	`1.0.0c`
openssl	openssl	`1.0.0d`
openssl	openssl	`1.0.0e`
openssl	openssl	`1.0.0g`
openssl	openssl	`{"endIncluding":"0.9.8u"}`
openssl	openssl	`0.9.1c`
openssl	openssl	`0.9.2b`
openssl	openssl	`0.9.3`
openssl	openssl	`0.9.3a`
openssl	openssl	`0.9.4`
openssl	openssl	`0.9.5`
openssl	openssl	`0.9.5a`
openssl	openssl	`0.9.6`
openssl	openssl	`0.9.6a`
openssl	openssl	`0.9.6b`
openssl	openssl	`0.9.6c`
openssl	openssl	`0.9.6d`
openssl	openssl	`0.9.6e`
openssl	openssl	`0.9.6f`
openssl	openssl	`0.9.6g`
openssl	openssl	`0.9.6h`
openssl	openssl	`0.9.6i`
openssl	openssl	`0.9.6j`
openssl	openssl	`0.9.6k`
openssl	openssl	`0.9.6l`
openssl	openssl	`0.9.6m`
openssl	openssl	`0.9.7`
openssl	openssl	`0.9.7a`
openssl	openssl	`0.9.7b`
openssl	openssl	`0.9.7c`
openssl	openssl	`0.9.7d`
openssl	openssl	`0.9.7e`
openssl	openssl	`0.9.7f`
openssl	openssl	`0.9.7g`
openssl	openssl	`0.9.7h`
openssl	openssl	`0.9.7i`
openssl	openssl	`0.9.7j`
openssl	openssl	`0.9.7k`
openssl	openssl	`0.9.7l`
openssl	openssl	`0.9.7m`
openssl	openssl	`0.9.8`
openssl	openssl	`0.9.8a`
openssl	openssl	`0.9.8b`
openssl	openssl	`0.9.8c`
openssl	openssl	`0.9.8d`
openssl	openssl	`0.9.8e`
openssl	openssl	`0.9.8f`
openssl	openssl	`0.9.8g`
openssl	openssl	`0.9.8h`
openssl	openssl	`0.9.8i`
openssl	openssl	`0.9.8j`
openssl	openssl	`0.9.8k`
openssl	openssl	`0.9.8l`
openssl	openssl	`0.9.8m`
openssl	openssl	`0.9.8n`
openssl	openssl	`0.9.8o`
openssl	openssl	`0.9.8p`
openssl	openssl	`0.9.8q`
openssl	openssl	`0.9.8r`
openssl	openssl	`0.9.8s`
openssl	openssl	`0.9.8t`
redhat	openssl	`0.9.6-15`
redhat	openssl	`0.9.6b-3`
redhat	openssl	`0.9.7a-2`
openssl	openssl	`1.0.1`

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.