Use-after-free and out of bounds issues found using Address Sanitizer

Use-after-free and out of bounds issues found using Address Sanitizer

Announced

June 10, 2014

Reporter

Abhishek Arya

Impact

Critical

Products

Firefox, Firefox ESR, SeaMonkey, Thunderbird

Fixed in

• Firefox 30
• Firefox ESR 24.6
• SeaMonkey 2.26.1
• Thunderbird 24.6

Description

Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team discovered a number of use-after-free and out of bounds read issues using the Address Sanitizer tool. These issues are potentially exploitable, allowing for remote code execution.

In general this flaw cannot be exploited through email in the Thunderbird and Seamonky products because scripting is disabled, but is potentially a risk in browser or browser-like contexts.

References

The following issues were fixed in Firefox 30 and did not affect Firefox ESR 24:

• out of bounds read in PropertyProvider::FindJustificationRange (CVE-2014-1536)
• Heap-use-after-free in mozilla::dom::workers::WorkerPrivateParent (CVE-2014-1537)

The following issue was fixed in both Firefox 30 and ESR 24.6:

• Heap-use-after-free in nsTextEditRules::CreateMozBR (CVE-2014-1538)