CVE-2020-25866: Null Pointer Dereference
First published: Tue Oct 06 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wireshark Wireshark | >=3.0.0<=3.0.13 | |
| Wireshark Wireshark | >=3.2.0<=3.2.6 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| Oracle ZFS Storage Appliance Kit | =8.8 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html
- https://gitlab.com/wireshark/wireshark/-/commit/4a948427100b6c109f4ec7b4361f0d2aec5e5c3f
- https://gitlab.com/wireshark/wireshark/-/issues/16866
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6IGRYKW4XLR44YDWTAH547ODYYBYPB2D/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZUHMK5HYTUUDXA64T2TAMAFMYV674QBW/
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.wireshark.org/security/wnpa-sec-2020-13.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IGRYKW4XLR44YDWTAH547ODYYBYPB2D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZUHMK5HYTUUDXA64T2TAMAFMYV674QBW/
Frequently Asked Questions
What is CVE-2020-25866?
CVE-2020-25866 is a vulnerability in Wireshark versions 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13 where the BLIP protocol dissector has a NULL pointer dereference.
How severe is CVE-2020-25866?
CVE-2020-25866 has a severity rating of 7.5 (high).
Which software versions are affected by CVE-2020-25866?
Wireshark versions 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13 are affected by CVE-2020-25866.
How can CVE-2020-25866 be fixed?
CVE-2020-25866 can be fixed by updating Wireshark to a version that includes the fix, such as version 3.0.14 or 3.2.7.
Where can I find more information about CVE-2020-25866?
More information about CVE-2020-25866 can be found at the following references: [Link 1](http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html), [Link 2](http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html), [Link 3](https://gitlab.com/wireshark/wireshark/-/commit/4a948427100b6c109f4ec7b4361f0d2aec5e5c3f).
- collector/nvd-index
- agent/remedy
- agent/softwarecombine
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/weakness
- agent/author
- agent/severity
- agent/last-modified-date
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/wireshark
- canonical/wireshark wireshark
- version/wireshark wireshark/3.0.0
- version/wireshark wireshark/3.0.13
- version/wireshark wireshark/3.2.0
- version/wireshark wireshark/3.2.6
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/31
- version/fedoraproject fedora/32
- version/fedoraproject fedora/33
- vendor/opensuse
- canonical/opensuse leap
- version/opensuse leap/15.1
- version/opensuse leap/15.2
- vendor/oracle
- canonical/oracle zfs storage appliance kit
- version/oracle zfs storage appliance kit/8.8