CVE-2012-2135

medium

Published 2012-08-14 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

6.4

Description

The utf-16 decoder in Python 3.1 through 3.3 does not update the aligned_end variable after calling the unicode_decode_call_errorhandler function, which allows remote attackers to obtain sensitive information (process memory) or cause a denial of service (memory corruption and crash) via unspecified vectors.

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.

OS impact

Debian Affected 1 release

Version	Status	Fixed in
6.0	Affected	—

Ubuntu Affected 5 releases

Version	Status	Fixed in
12.10	Affected	—
12.04	Affected	—
11.10	Affected	—
11.04	Affected	—
10.04	Affected	—

Application impact

Vendor	Product	Versions	Fixed
python	python	`{"startIncluding":"2.7.0","endExcluding":"2.7.4"}`	`2.7.4`

References

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

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