CVE-2014-1564

medium

Published 2014-09-03 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.3

Description

Mozilla Firefox before 32.0, Firefox ESR 31.x before 31.1, and Thunderbird 31.x before 31.1 do not properly initialize memory for GIF rendering, which allows remote attackers to obtain sensitive information from process memory via crafted web script that interacts with a CANVAS element associated with a malformed GIF image.

Predictions

Exploit likelihood

20%

Patch ETA

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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-39295 remote multiple verified

Michal Zalewski · 2014-09-02

Mozilla Firefox 9.0.1 / Thunderbird 3.1.20 - Information Disclosure

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
suse	12.3	affected
suse	13.1	affected

Application impact

Vendor	Product	Versions
mozilla	firefox	`{"endIncluding":"31.1.0"}`
mozilla	firefox	`30.0`
mozilla	firefox	`31.0`
mozilla	thunderbird	`31.0`

References

CWEs

CWE-824

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

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