BNC IRC Proxy backspace command execution
| bnc-backspace-command-execution (17672) |  High Risk |
Description:
BNC could allow a remote attacker to execute arbitrary commands, caused by an input validation vulnerability. A remote attacker could send a specially-crafted request containing backspace characters to execute arbitrary BNC commands.
Platforms Affected:
- Gentoo, Linux
- James Seter, BNC prior to 2.8.9
Remedy:
Upgrade to the latest version of BNC (2.8.9 or later), available from The BNC project Web site. See References.
For Gentoo Linux:
Upgrade to the latest version of BNC (2.8.9 or later), as listed in GLSA 200410-13. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- The BNC project Web site, The IRC proxy at http://www.gotbnc.com/.
- BID-11355: BNC sbuf_getmsg() Buffer Overflow Vulnerability
- CVE-2004-1482: The sbuf_getmsg function in BNC incorrectly handles backspace characters, which could allow remote attackers to bypass authentication and gain access to arbitrary scripts.
- GLSA-200410-13: BNC: Input validation flaw
- OSVDB ID: 10596: BNC IRC Proxy Unspecified Backspace Issue
- SA12770: BNC IRC Proxy Backspace User Identity Spoofing Vulnerability
Reported:
Oct 08, 2004
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For corrections or additions please email xforce@iss.net