DNS: GnuTLS DANE dane.c Heap Buffer Overflow
This signature detects attempts to exploit a known vulnerability in GnuTLS. The vulnerability is due to an error in the function dane_query_tlsa() in libdane/dane.c while processing TLSA records. A remote attacker could exploit this vulnerability by enticing a vulnerable client to open a malicious domain name, and then sending more than 4 TLSA records in a DNS response during DANE verification. A successful attack can result in arbitrary code execution, while an unsuccessful one will cause the vulnerable client application to terminate.
Extended Description
Buffer overflow in the dane_query_tlsa function in the DANE library (libdane) in GnuTLS 3.1.x before 3.1.15 and 3.2.x before 3.2.5 allows remote servers to cause a denial of service (memory corruption) via a response with more than four DANE entries.
Affected Products
Gnu gnutls
Short Name
DNS:GNUTLS-DANE-BOF
Severity
Major
Recommended
False
Recommended Action
None
Category
DNS
Keywords
Buffer CVE-2013-4466 DANE GnuTLS Heap Overflow bid:63326 dane.c
Release Date
02/24/2014
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3375
False Positive
Unknown
Vendors
Gnu
CVSS Score
5.0