Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2017-5193

NULL Pointer Dereference

Published: Mar 03, 2017 | Modified: Apr 20, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.9 LOW
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2017-5193
CWEhttps://cwe.mitre.org/data/definitions/476.html

The nickcmp function in Irssi before 0.8.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a message without a nick.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

Name Vendor Start Version End Version
Irssi Irssi * 0.8.21 (excluding)
Irssi Ubuntu devel *
Irssi Ubuntu esm-infra/xenial *
Irssi Ubuntu precise *
Irssi Ubuntu trusty *
Irssi Ubuntu upstream *
Irssi Ubuntu xenial *
Irssi Ubuntu yakkety *

Potential Mitigations

References

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