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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.

🗓️ 19 Jan 2022 08:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 1 Views

Fetchmail pre-6.4.20 omits variable argument list init in report_vbuild, risking denial of service.

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19 Jan 2022 08:00Current
7High risk
Vulners AI Score7
CVSS 25
CVSS 3.17.5
EPSS0.0026
1