VIR Vulnerability Intelligence Relay

CVE-2012-1940

critical
Published 2012-06-05 · Modified 2026-04-29
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
9.3

Description

Use-after-free vulnerability in the nsFrameList::FirstChild function in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.5, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.5, and SeaMonkey before 2.10 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by changing the size of a container of absolutely positioned elements in a column.

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.

Application impact
VendorProductVersionsFixed
mozilla mozillafirefox4.0
mozilla mozillafirefox4.0.1
mozilla mozillafirefox5.0
mozilla mozillafirefox5.0.1
mozilla mozillafirefox6.0
mozilla mozillafirefox6.0.1
mozilla mozillafirefox6.0.2
mozilla mozillafirefox7.0
mozilla mozillafirefox7.0.1
mozilla mozillafirefox8.0
mozilla mozillafirefox8.0.1
mozilla mozillafirefox9.0
mozilla mozillafirefox9.0.1
mozilla mozillafirefox10.0
mozilla mozillafirefox10.0.1
mozilla mozillafirefox10.0.2
mozilla mozillafirefox10.0.3
mozilla mozillafirefox10.0.4
mozilla mozillafirefox11.0
mozilla mozillafirefox12.0
mozilla mozillaseamonkey{"endIncluding":"2.9"}
mozilla mozillaseamonkey1.0
mozilla mozillaseamonkey1.0.1
mozilla mozillaseamonkey1.0.2
mozilla mozillaseamonkey1.0.3
mozilla mozillaseamonkey1.0.4
mozilla mozillaseamonkey1.0.5
mozilla mozillaseamonkey1.0.6
mozilla mozillaseamonkey1.0.7
mozilla mozillaseamonkey1.0.8
mozilla mozillaseamonkey1.0.9
mozilla mozillaseamonkey1.1
mozilla mozillaseamonkey1.1.1
mozilla mozillaseamonkey1.1.2
mozilla mozillaseamonkey1.1.3
mozilla mozillaseamonkey1.1.4
mozilla mozillaseamonkey1.1.5
mozilla mozillaseamonkey1.1.6
mozilla mozillaseamonkey1.1.7
mozilla mozillaseamonkey1.1.8
mozilla mozillaseamonkey1.1.9
mozilla mozillaseamonkey1.1.10
mozilla mozillaseamonkey1.1.11
mozilla mozillaseamonkey1.1.12
mozilla mozillaseamonkey1.1.13
mozilla mozillaseamonkey1.1.14
mozilla mozillaseamonkey1.1.15
mozilla mozillaseamonkey1.1.16
mozilla mozillaseamonkey1.1.17
mozilla mozillaseamonkey1.1.18
mozilla mozillaseamonkey1.1.19
mozilla mozillaseamonkey1.5.0.8
mozilla mozillaseamonkey1.5.0.9
mozilla mozillaseamonkey1.5.0.10
mozilla mozillaseamonkey2.0
mozilla mozillaseamonkey2.0.1
mozilla mozillaseamonkey2.0.2
mozilla mozillaseamonkey2.0.3
mozilla mozillaseamonkey2.0.4
mozilla mozillaseamonkey2.0.5
mozilla mozillaseamonkey2.0.6
mozilla mozillaseamonkey2.0.7
mozilla mozillaseamonkey2.0.8
mozilla mozillaseamonkey2.0.9
mozilla mozillaseamonkey2.0.10
mozilla mozillaseamonkey2.0.11
mozilla mozillaseamonkey2.0.12
mozilla mozillaseamonkey2.0.13
mozilla mozillaseamonkey2.0.14
mozilla mozillaseamonkey2.1
mozilla mozillaseamonkey2.2
mozilla mozillaseamonkey2.3
mozilla mozillaseamonkey2.3.1
mozilla mozillaseamonkey2.3.2
mozilla mozillaseamonkey2.3.3
mozilla mozillaseamonkey2.4
mozilla mozillaseamonkey2.4.1
mozilla mozillaseamonkey2.5
mozilla mozillaseamonkey2.6
mozilla mozillaseamonkey2.6.1
mozilla mozillaseamonkey2.7
mozilla mozillaseamonkey2.7.1
mozilla mozillaseamonkey2.7.2
mozilla mozillaseamonkey2.8
mozilla mozillaseamonkey2.9
mozilla mozillathunderbird5.0
mozilla mozillathunderbird6.0
mozilla mozillathunderbird6.0.1
mozilla mozillathunderbird6.0.2
mozilla mozillathunderbird7.0
mozilla mozillathunderbird7.0.1
mozilla mozillathunderbird8.0
mozilla mozillathunderbird9.0
mozilla mozillathunderbird9.0.1
mozilla mozillathunderbird10.0
mozilla mozillathunderbird10.0.1
mozilla mozillathunderbird10.0.2
mozilla mozillathunderbird10.0.3
mozilla mozillathunderbird10.0.4
mozilla mozillathunderbird11.0
mozilla mozillathunderbird12.0
mozilla mozillathunderbird_esr10.0
mozilla mozillathunderbird_esr10.0.1
mozilla mozillathunderbird_esr10.0.2
mozilla mozillathunderbird_esr10.0.3
mozilla mozillathunderbird_esr10.0.4

References

CWEs

CWE-399

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

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