PT-2014-8993 · Znc · Znc

Russellb28 · Published 2014-12-19 · Updated 2015-09-29 · CVE-2014-9403

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions ZNC versions prior to 1.4

Description The issue allows remote authenticated users to cause a denial of service, resulting in a crash due to a NULL pointer dereference. This occurs when a user adds a channel with the same name as an existing channel but without the leading # character. The problem is related to a use-after-free error, which happens when memory is accessed after it has been freed.

Recommendations For versions prior to 1.4, update to version 1.4 or later to resolve the issue. As a temporary workaround, consider restricting the ability for remote authenticated users to add channels with names similar to existing ones, to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2014-9403

MGASA-2014-0543

Affected Products

Znc

References · 20

• https://github.com/znc/znc/issues/528 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2014-0543 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2014-0543.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2014-9403 · Security Note
• https://ubuntu.com/security/CVE-2014-9403 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2014-9403 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2014-9403 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2014-9403 · Vendor Advisory
• http://mandriva.com/security/advisories?name=MDVSA-2015:013 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2014-9403 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2014-9403 · Vendor Advisory
• https://github.com/znc/znc/blob/master/ChangeLog.md · Note
• https://github.com/znc/znc/commit/8756be513ab6663dcd64087006b257ff34e8e487 · Note
• http://openwall.com/lists/oss-security/2014/12/17 · Note
• http://secunia.com/advisories/57795 · Note