Vulnerability CVE-2021-27815
Published: 2021-04-14

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

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Libexif project -> EXIF 

 References:
https://github.com/libexif/exif/issues/4
https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa
https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c
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