Fish multiple buffer overflows

fish-multiple-bo (32892)

High Risk

Description:

Fish is vulnerable to multiple buffer overflows, caused by improper bounds checking by the decrypt_incoming, notice_received, nick_changed and the decrypt_topic_332 functions. By sending specially-crafted data, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score:	7
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6
Exploitability:	Proof-Of-Concept
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of July 9, 2011.

References:

• FiSH Web site: FiSH - Encryption addon for mIRC, irssi and xchat.
• ilja's blag, Thursday, 8. March 2007: fishy FISH.
• Offensive Security Exploit Database [04-17-2011]: FiSH-irssi v0.99 Evil ircd Buffer Overflow (CVE-2007-1397).
• BID-22880: Fish Multiple Remote Buffer Overflow Vulnerabilities
• CVE-2007-1397: Multiple stack-based buffer overflows in the (1) ExtractRnick and (2) decrypt_topic_332 functions in FiSH allow remote attackers to execute arbitrary code via long strings.
• SA24495: FiSH Multiple Buffer Overflow Vulnerabilities
• VUPEN/ADV-2007-0910: FiSH Multiple Command Handling Buffer Overflow Remote Code Execution Vulnerabilities

Platforms Affected:

• Apple Mac OS X 10.4.5
• Fish Fish for irssi 0.99
• Fish Fish for mIRC 1.29
• Fish Fish for Xchat 0.98

Reported:

Mar 08, 2007

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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