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The MITRE CVE dictionary describes this issue as:

gnuserv before 3.12, as shipped with XEmacs, does not properly check the specified length of an X Windows MIT-MAGIC-COOKIE cookie, which allows remote attackers to execute arbitrary commands via a buffer overflow, or brute force authentication by using a short cookie length.

Find out more about CVE-2001-0191 from the MITRE CVE dictionary dictionary and NIST NVD.

Red Hat Security Errata

Platform Errata Release Date
Red Hat Powertools 6.2 RHSA-2001:011 2001-02-02
Red Hat Linux 7.0 RHSA-2001:010 2001-02-02

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