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4.3
CVSSv2

CVE-2021-27815

Published: 14/04/2021 Updated: 07/11/2023
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
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Vulnerability Summary

NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and previous versions allows malicious users to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.

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libexif project exif

fedoraproject fedora 32

fedoraproject fedora 33

fedoraproject fedora 34

Vendor Advisories

Debian CVElist Bug Report Logs: exif: CVE-2021-27815: NULL pointer dereference with strncpy() in exif/actions.c
Debian Bug report logs - #1018814 exif: CVE-2021-27815: NULL pointer dereference with strncpy() in exif/actionsc Package: exif; Maintainer for exif is Debian PhotoTools Maintainers <pkg-phototools-devel@listsaliothdebianorg>; Source for exif is src:exif (PTS, buildd, popcon) Reported by: Aron Xu <aron@debianorg> ...
Arch Linux Issues:
A NULL pointer deference in the "actionsc" library of libexif version 0622 allows attackers to cause a denial of service (DoS) by opening a malicious JPEG file, causing the application to crash ...

References

CWE-476https://github.com/libexif/exif/issues/4https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fahttps://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1chttps://security.gentoo.org/glsa/202210-28https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1018814https://nvd.nist.govhttps://security.archlinux.org/CVE-2021-27815
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2006-4304CVE-2024-4240arbitrary CVE-2024-31601XSSCVE-2023-20198CVE-2024-4256CVE-2024-3342encryption
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