[arch-security] [ASA-201710-28] musl: arbitrary code execution
rgacogne at archlinux.org
Sat Oct 21 19:36:48 UTC 2017
Arch Linux Security Advisory ASA-201710-28
Date : 2017-10-21
CVE-ID : CVE-2017-15650
Package : musl
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-457
The package musl before version 1.1.17-1 is vulnerable to arbitrary
Upgrade to 1.1.17-1.
# pacman -Syu "musl>=1.1.17-1"
The problem has been fixed upstream in version 1.1.17.
Using a local, trusted DNS resolver mitigates the issue.
A stack-based buffer overflow has been found in the DNS response
parsing code of musl libc <= 1.1.16. When an application makes a
request via getaddrinfo for both IPv4 and IPv6 results (AF_UNSPEC), an
attacker who controls or can spoof the nameservers configured in
resolv.conf can reply to both the A and AAAA queries with A results.
Since A records are smaller than AAAA records, it's possible to fit
more addresses than the precomputed bound, and a buffer overflow
A remote attacker who controls or can spoof the nameservers configured
in resolv.conf can execute arbitrary code on the affected host.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 833 bytes
Desc: OpenPGP digital signature
More information about the arch-security