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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.openwall.com/lists/oss-security/2021/07/28/5	Mailing List Patch Third Party Advisory
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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:33:::::::*
	cpe:2.3:o:fedoraproject:fedora:34:::::::*

Information

Published : 2021-07-30 07:15

Updated : 2022-10-28 06:14

NVD link : CVE-2021-36386

Mitre link : CVE-2021-36386

JSON object : View

CWE

CWE-909

Missing Initialization of Resource

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Products Affected

fetchmail

fetchmail

fedoraproject

fedora

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