PT-2013-4755 · Apple · Dyld+1

Stefan Esser · Published 2013-06-05 · Updated 2013-10-31 · CVE-2013-3950

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions dyld in Apple iOS versions 5.1.x through 6.1.3

Description A stack-based buffer overflow issue exists in the openSharedCacheFile function in dyld.cpp, which can be exploited by attackers using a long string in the DYLD SHARED CACHE DIR environment variable, making it easier to conduct untethering attacks.

Recommendations For dyld in Apple iOS versions 5.1.x through 6.1.3, consider restricting access to the DYLD SHARED CACHE DIR environment variable to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2013-3950

Affected Products

Dyld

Ios

References · 7

• 🔥 http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf · Exploit
• http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-3950 · Security Note
• http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html · Vendor Advisory
• http://support.apple.com/kb/HT5934 · Note
• http://syscan.org/index.php/sg/program/day/2 · Note
• http://securitytracker.com/id/1029054 · Note