Gentoo: GLSA-202107-22: InspIRCd: Information disclosure
Summary
InspIRCd incorrectly handled malformed PONG messages, resulting in access of freed memory.
Resolution
All InspIRCd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/inspircd-3.10.0"
References
[ 1 ] CVE-2021-33586 https://nvd.nist.gov/vuln/detail/CVE-2021-33586
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202107-22
Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
Background
InspIRCd is a modular Internet Relay Chat (IRC) server written in C++ which was created from scratch to be stable, modern and lightweight.
Affected Packages
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-irc/inspircd < 3.10.0 >= 3.10.0
Impact
===== A remote attacker could send crafted packets to the server, possibly allowing them to obtain sensitive information.
Workaround
There is no known workaround at this time.