Vulnerability Details : CVE-2020-26575
In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.
Exploit prediction scoring system (EPSS) score for CVE-2020-26575
Probability of exploitation activity in the next 30 days: 0.46%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-26575
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-26575
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-26575
-
https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10ab
FBZERO: Make sure our offset advances. (3ff94065) · Commits · Wireshark Foundation / wireshark · GitLabPatch;Third Party Advisory
-
https://gitlab.com/wireshark/wireshark/-/merge_requests/471
FBZERO: Make sure our offset advances. (!471) · Merge Requests · Wireshark Foundation / wireshark · GitLabPatch;Third Party Advisory
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https://gitlab.com/wireshark/wireshark/-/merge_requests/473
FBZERO: Make sure our offset advances. (!473) · Merge Requests · Wireshark Foundation / wireshark · GitLabPatch;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2667E6WKVE56G66BVBVD7LJPIDOJ7K3/
[SECURITY] Fedora 32 Update: wireshark-3.4.0-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html
[SECURITY] [DLA 2547-1] wireshark security updateMailing List;Third Party Advisory
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https://gitlab.com/wireshark/wireshark/-/merge_requests/472
FBZERO: Make sure our offset advances. (!472) · Merge Requests · Wireshark Foundation / wireshark · GitLabPatch;Third Party Advisory
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https://www.oracle.com/security-alerts/cpujan2021.html
Oracle Critical Patch Update Advisory - January 2021Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHZSVK7PO2LTGFQXFHFXY6SOMSQ7UPRS/
[SECURITY] Fedora 33 Update: wireshark-3.4.0-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://gitlab.com/wireshark/wireshark/-/merge_requests/467
FBZERO: Make sure our offset advances. (!467) · Merge Requests · Wireshark Foundation / wireshark · GitLabPatch;Third Party Advisory
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https://security.gentoo.org/glsa/202011-08
Wireshark: Multiple vulnerabilities (GLSA 202011-08) — Gentoo securityThird Party Advisory
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https://www.wireshark.org/security/wnpa-sec-2020-14.html
Wireshark · wnpa-sec-2020-14 · FBZERO dissector crashVendor Advisory
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https://gitlab.com/wireshark/wireshark/-/issues/16887
Not FoundBroken Link
Products affected by CVE-2020-26575
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:zfs_storage_appliance_firmware:8.8:*:*:*:*:*:*:*
- cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*