#VU29269 NULL pointer dereference in dircproxy - CVE-2007-5226

Vulnerability identifier: #VU29269

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2007-5226

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
dircproxy
Other software / Other software solutions

Vendor: w8tvi

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in irc_server.c in dircproxy. A remote attacker can trigger denial of service conditions via an ACTION command without a parameter, which triggers a NULL pointer dereference, as demonstrated using a blank /me message from irssi.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

dircproxy: 0.5.2 - 1.1.0

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External links
https://dircproxy.securiweb.net/ticket/89
https://bugzilla.redhat.com/show_bug.cgi?id=319301

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.