CVE Vulnerability

CVE-2021-36386

report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic platform results in an impact beyond an inconvenience to the client user.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://www.openwall.com/lists/oss-security/2021/07/28/5 Mailing List Patch
https://www.fetchmail.info/fetchmail-SA-2021-01.txt Vendor Advisory
https://www.fetchmail.info/security.html Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/08/09/1 Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGYO5AHSXTCKA4NQC2Z4H3XMMYNAGC77/ Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIXKO6QW3AUHGJVWKJXBCOVBYJUJRBFC/ Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202209-14 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Information

Published : 2021-07-30 02:15

Updated : 2022-10-28 01:14

NVD link : CVE-2021-36386

Mitre link : CVE-2021-36386

Products Affected
No products.
CWE
CWE-909