Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fetchmail | Fetchmail | < 6.4.20 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/07/28/5Mailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/09/1Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202209-14Third Party Advisory
- https://www.fetchmail.info/fetchmail-SA-2021-01.txtVendor Advisory
- https://www.fetchmail.info/security.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/07/28/5Mailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/09/1Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202209-14Third Party Advisory
- https://www.fetchmail.info/fetchmail-SA-2021-01.txtVendor Advisory
- https://www.fetchmail.info/security.htmlVendor Advisory
FAQ
What is CVE-2021-36386?
CVE-2021-36386 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 unsp...
How severe is CVE-2021-36386?
CVE-2021-36386 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-36386?
Check the references section above for vendor advisories and patch information. Affected products include: Fetchmail Fetchmail, Fedoraproject Fedora.