Debian LTS: Security Advisory for libexif (DLA-2214-1)

Published: 2020-05-19 03:00:16
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C

Summary:
The remote host is missing an update for the 'libexif' Linux Distribution Package(s) announced via the DLA-2214-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Various vulnerabilities have been addressed in libexif, a library to parse EXIF metadata files. CVE-2016-6328 An integer overflow when parsing the MNOTE entry data of the input file had been found. This could have caused Denial-of-Service (DoS) and Information Disclosure (disclosing some critical heap chunk metadata, even other applications' private data). CVE-2017-7544 libexif had been vulnerable to out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c caused by improper length computation of the allocated data of an ExifMnote entry which could have caused denial-of-service or possibly information disclosure. CVE-2018-20030 An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags within libexif version could have been exploited to exhaust available CPU resources. CVE-2020-0093 In exif_data_save_data_entry of exif-data.c, there was a possible out of bounds read due to a missing bounds check. This could have lead to local information disclosure with no additional execution privileges needed. User interaction was needed for exploitation. CVE-2020-12767 libexif had a divide-by-zero error in exif_entry_get_value in exif-entry.c

Affected Versions:
'libexif' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 8 'Jessie', these problems have been fixed in version 0.6.21-2+deb8u2. We recommend that you upgrade your libexif Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2016-6328
https://nvd.nist.gov/vuln/detail/CVE-2017-7544
https://nvd.nist.gov/vuln/detail/CVE-2018-20030
https://nvd.nist.gov/vuln/detail/CVE-2020-0093
https://nvd.nist.gov/vuln/detail/CVE-2020-12767

CVE Analysis

https://www.mageni.net/cve/CVE-2016-6328
https://www.mageni.net/cve/CVE-2017-7544
https://www.mageni.net/cve/CVE-2018-20030
https://www.mageni.net/cve/CVE-2020-0093
https://www.mageni.net/cve/CVE-2020-12767

References:

https://lists.debian.org/debian-lts-announce/2020/05/msg00016.html
https://security-tracker.debian.org/tracker/DLA-2214-1
https://bugs.debian.org/960199

Severity
High
CVSS Score
7.8
Published
2020-05-19
Modified
2020-05-20
Category
Debian Local Security Checks

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