PT-2020-14746 · Claws Mail Team+1 · Claws Mail+1

Hanno Boeck · Published 2020-07-28 · Updated 2022-01-04 · CVE-2020-16094

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Claws Mail versions prior to 3.17.7

Description A malicious IMAP server can cause stack consumption in Claws Mail due to unlimited recursion into subdirectories during a rebuild of the folder tree. This occurs in the imap scan tree recursive function.

Recommendations For Claws Mail versions prior to 3.17.7, update to version 3.17.7 or later to resolve the issue.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

ALT-PU-2020-2897

ALT-PU-2020-2978

ALT-PU-2021-3520

CVE-2020-16094

MGASA-2020-0391

Affected Products

Alt Linux

Claws Mail

References · 15

• 🔥 https://thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4313 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CRKHUOVTJBHT53J4CYU53PXYYQKSGEA · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0391 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-16094 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-16094 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-16094 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-16094 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNJIXYDMSXYDII4ERMQ4EEKZX64U3QR4 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-16094 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUBLHUG2UCXVABAGN5FVTD3AB3YKE5NN · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-16094 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-16094 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0391.html · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/JUBLHUG2UCXVABAGN5FVTD3AB3YKE5NN · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=27427 · Note