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CVE-2015-2716: Buffer overflow when parsing compressed XML

Buffer overflow in the XML parser in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 allows remote attackers to execute arbitrary code by providing a large amount of compressed XML data, a related issue to CVE-2015-1283.

CVE
#buffer_overflow#firefox

Mozilla Foundation Security Advisory 2015-54

Announced

May 12, 2015

Reporter

Ucha Gobejishvili

Impact

Critical

Products

Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird

Fixed in

  • Firefox 38
  • Firefox ESR 31.7
  • Firefox OS 2.2
  • SeaMonkey 2.35
  • Thunderbird 31.7
  • Thunderbird 38.0.1

Description

Security researcher Ucha Gobejishvili used the Address Sanitizer tool to find a buffer overflow while parsing compressed XML content. This was due to an error in how buffer space is created and modified when handling large amounts of XML data. This results in a potentially exploitable crash.

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

References

  • Buffer overflow xml parser (CVE-2015-2716)

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