CVE-2013-5580

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-01 · updated 2026-06-16
Weakness: CWE-20

Description

The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a "notice auth" message not being sent to a new client.

Affected products

Barton Ngircd: 18.0, 19.0, 19.1, 20.0, 20.1, 20.2

References

http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=309122017ebc6fff039a7cab1b82f632853d82d5
http://arthur.barton.de/pipermail/ngircd-ml/2013-August/000645.html
http://freecode.com/projects/ngircd/releases/357245
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115047.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115077.html
http://osvdb.org/96590
http://secunia.com/advisories/54567
http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=309122017ebc6fff039a7cab1b82f632853d82d5
http://arthur.barton.de/pipermail/ngircd-ml/2013-August/000645.html
http://freecode.com/projects/ngircd/releases/357245
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115047.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115077.html

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