CVE-2013-0756
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
- EPSS
- 4.20% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/seamonkey · mozilla/thunderbird · mozilla/thunderbird esr · opensuse/opensuse · suse/linux enterprise desktop · suse/linux enterprise server · suse/linux enterprise software development kit · canonical/ubuntu linux
- Source
- security@mozilla.org
EPSS 4.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.htmlMailing List, Third Party Advisory
- http://www.mozilla.org/security/announce/2013/mfsa2013-19.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-1681-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-1681-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-1681-4Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=814029Issue Tracking, Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17101Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.htmlMailing List, Third Party Advisory
- http://www.mozilla.org/security/announce/2013/mfsa2013-19.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-1681-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-1681-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-1681-4Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=814029Issue Tracking, Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17101Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.