CVE-2021-36386

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.20%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory fetchmail.info Vendor Advisory fetchmail.info
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.fetchmail.info/security.html vendor advisory
http://www.openwall.com/lists/oss-security/2021/07/28/5 mailing list third party advisory patch
https://www.fetchmail.info/fetchmail-SA-2021-01.txt vendor advisory
http://www.openwall.com/lists/oss-security/2021/08/09/1 mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIXKO6QW3AUHGJVWKJXBCOVBYJUJRBFC/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGYO5AHSXTCKA4NQC2Z4H3XMMYNAGC77/ vendor advisory
https://security.gentoo.org/glsa/202209-14 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-36386?
CVE-2021-36386 has been scored as a high severity vulnerability.
How to fix CVE-2021-36386?
To fix CVE-2021-36386, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36386 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-36386 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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