XChat 1.8.7 and earlier, including default configurations of 1.4.2 and 1.4.3, allows remote attackers to execute arbitrary IRC commands as other clients via encoded characters in a PRIVMSG command that calls CTCP PING, which expands the characters in the client response when the percascii variable is set.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xchat | Xchat | 1.4.2 (including) | 1.4.2 (including) |
| Xchat | Xchat | 1.4.3 (including) | 1.4.3 (including) |
| Red Hat Linux 6.2 | RedHat | * | |
| Red Hat Linux 7.0 | RedHat | * | |
| Red Hat Linux 7.1 | RedHat | * | |
| Red Hat Linux 7.2 | RedHat | * |
References
- http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000453
- http://marc.info/?l=bugtraq\u0026m=101060676210255\u0026w=2
- http://online.securityfocus.com/advisories/3806
- http://rhn.redhat.com/errata/RHSA-2002-005.html
- http://www.debian.org/security/2002/dsa-099
- http://www.securityfocus.com/bid/3830
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7856
- http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000453
- http://marc.info/?l=bugtraq\u0026m=101060676210255\u0026w=2
- http://online.securityfocus.com/advisories/3806
- http://rhn.redhat.com/errata/RHSA-2002-005.html
- http://www.debian.org/security/2002/dsa-099
- http://www.securityfocus.com/bid/3830
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7856