Debian 10 Asterisk DLA-3696-1 Moderate: Memory Corruption DoS Issues

debian lts

December 28, 2023

Multiple security vulnerabilities have been discovered in Asterisk, an Open Source Private Branch Exchange

Topics Covered

security advisory denial of service buffer overflow debian memory corruption asterisk

Summary

CVE-2023-37457

The 'update' functionality of the PJSIP_HEADER dialplan function can exceed
the available buffer space for storing the new value of a header. By doing
so this can overwrite memory or cause a crash. This is not externally
exploitable, unless dialplan is explicitly written to update a header based
on data from an outside source. If the 'update' functionality is not used
the vulnerability does not occur.

CVE-2023-38703

PJSIP is a free and open source multimedia communication library written in
C with high level API in C, C++, Java, C#, and Python languages. SRTP is a
higher level media transport which is stacked upon a lower level media
transport such as UDP and ICE. Currently a higher level transport is not
synchronized with its lower level transport that may introduce a
use-after-free issue. This vulnerability affects applications that have
SRTP capability (`PJMEDIA_HAS_SRTP` is set) and use underlying media