Division by zero in libexif library



Published: 2020-05-19
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-12767
CWE-ID CWE-369
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		libexif
Universal components / Libraries / Libraries used by multiple products

Vendor libexif.sourceforge.net

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Division by zero

EUVDB-ID: #VU28005

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12767

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to division by zero error in "exif_entry_get_value" in the "exif-entry.c" file. A local user can cause a denial of service condition on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libexif: 0.6.21

External links

http://github.com/libexif/libexif/issues/31
http://lists.debian.org/debian-lts-announce/2020/05/msg00016.html
http://usn.ubuntu.com/4358-1/
http://github.com/libexif/libexif/releases/tag/libexif-0_6_22-release


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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