Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-25866

NULL Pointer Dereference

Published: Oct 06, 2020 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/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
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-25866
CWEhttps://cwe.mitre.org/data/definitions/476.html

In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs.

Weakness

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

Affected Software

NameVendorStart VersionEnd Version
WiresharkWireshark3.0.0 (including)3.0.13 (including)
WiresharkWireshark3.2.0 (including)3.2.6 (including)
WiresharkUbuntubionic*
WiresharkUbuntufocal*
WiresharkUbuntutrusty*
WiresharkUbuntutrusty/esm*
WiresharkUbuntuupstream*
WiresharkUbuntuxenial*

Potential Mitigations

References

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