Debian Security Advisory

DLA-2214-1 libexif -- LTS security update

Date Reported:
18 May 2020
Affected Packages:
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: