CVE-2020-26575

Gentoo Linux Security Advisory 202011-08

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En Wireshark versiones hasta 3.2.7, el Facebook Zero Protocol (también se conoce como FBZERO), podría entrar en un bucle infinito. Esto fue abordado en el archivo epan/dissectors/packet-fbzero.c corrigiendo la implementación del avance de compensación

An update that fixes two vulnerabilities is now available. This update for wireshark fixes the following issues. Fixed an issue where FBZERO dissector was entering in infinite loop. Fixed an issue where GQUIC dissector was crashing Infinite memory allocation while parsing this tcp packet This update was imported from the SUSE:SLE-15:Update update project.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-06 CVE Reserved
2020-10-06 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CAPEC

References (12)

URL	Tag	Source
https://gitlab.com/wireshark/wireshark/-/issues/16887	Broken Link
https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html	Mailing List
https://www.oracle.com/security-alerts/cpujan2021.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10ab	2023-11-07
https://gitlab.com/wireshark/wireshark/-/merge_requests/467	2023-11-07
https://gitlab.com/wireshark/wireshark/-/merge_requests/471	2023-11-07
https://gitlab.com/wireshark/wireshark/-/merge_requests/472	2023-11-07
https://gitlab.com/wireshark/wireshark/-/merge_requests/473	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHZSVK7PO2LTGFQXFHFXY6SOMSQ7UPRS	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2667E6WKVE56G66BVBVD7LJPIDOJ7K3	2023-11-07
https://security.gentoo.org/glsa/202011-08	2023-11-07
https://www.wireshark.org/security/wnpa-sec-2020-14.html	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"	Zfs Storage Appliance Firmware Search vendor "Oracle" for product "Zfs Storage Appliance Firmware"	8.8 Search vendor "Oracle" for product "Zfs Storage Appliance Firmware" and version "8.8"	-	Affected	in	Oracle Search vendor "Oracle"	Zfs Storage Appliance Search vendor "Oracle" for product "Zfs Storage Appliance"	-	-	Safe
Wireshark Search vendor "Wireshark"		Wireshark Search vendor "Wireshark" for product "Wireshark"				<= 3.2.7 Search vendor "Wireshark" for product "Wireshark" and version " <= 3.2.7"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected