Debian Long Term Support / LTS Security Information / 2020 / Security Information -- DLA-2214-1 libexif

Debian Security Advisory

DLA-2214-1 libexif -- LTS security update

Date Reported:

18 May 2020

Affected Packages:

libexif

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2016-6328, CVE-2017-7544, CVE-2018-20030, CVE-2020-0093, CVE-2020-12767.

More information:

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

For Debian 8 Jessie, these problems have been fixed in version 0.6.21-2+deb8u2.

We recommend that you upgrade your libexif packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS