CVE-2013-0756: canonical ubuntu_linux Use After Free

Vulnerability summary

CVE-2013-0756 is a high (CVSS 9.3) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 4.20% chance of exploitation in the next 30 days, higher than 90.8% of scored vulnerabilities.

Timeline

1. 13-01-2013
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Use-after-free vulnerability in the obj_toSource function in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via a crafted web page referencing JavaScript Proxy objects that are not properly handled during garbage collection.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.