Vulnerability Name:

CVE-2020-16094 (CCN-185993)

Assigned:2020-02-15
Published:2020-02-15
Updated:2022-01-04
Summary:In imap_scan_tree_recursive in Claws Mail through 3.17.6, a malicious IMAP server can trigger stack consumption because of unlimited recursion into subdirectories during a rebuild of the folder tree.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-674
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-16094

Source: XF
Type: UNKNOWN
clawsmail-cve202016094-dos(185993)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-90e2b01f4a

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-67d9661fe2

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-1f60842034

Source: CCN
Type: Claws Mail Web site
Claws Mail

Source: CCN
Type: Bugzilla - Bug 4313
Recursion stack overflow (two variations) with rebuilding folder tree

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4313

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-16094

Vulnerable Configuration:Configuration 1:
  • cpe:/a:claws-mail:claws-mail:*:*:*:*:*:*:*:* (Version <= 3.17.6)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    claws-mail claws-mail *
    fedoraproject fedora 31
    fedoraproject fedora 32
    fedoraproject fedora 33