CVE-2020-25866

MEDIUM

Description

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.

References

https://gitlab.com/wireshark/wireshark/-/commit/4a948427100b6c109f4ec7b4361f0d2aec5e5c3f

https://gitlab.com/wireshark/wireshark/-/issues/16866

https://lists.fedoraproject.org/archives/list/[email protected]/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/6IGRYKW4XLR44YDWTAH547ODYYBYPB2D/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ZUHMK5HYTUUDXA64T2TAMAFMYV674QBW/

https://www.wireshark.org/security/wnpa-sec-2020-13.html

Details

Source: MITRE

Published: 2020-10-06

Updated: 2020-10-26

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH