CVE-2020-13112

An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF MakerNote handling could lead to information disclosure and crashes. This is different from CVE-2020-0093.

Most digital cameras produce EXIF files, which are JPEG files with extra tags that contain information about the image. The EXIF library allows you to parse an EXIF file and read the data from those tags.

Security Fix(es):

An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF MakerNote handling could lead to information disclosure and crashes. This is different from CVE-2020-0093.(CVE-2020-13112)

An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF MakerNote handling could lead to information disclosure and crashes. This is different from CVE-2020-0093.

In exif_entry_get_value of exif-entry.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

The updated packages fix a security vulnerability:

In exif_data_save_data_entry of exif-data.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. (CVE-2020-0093)

exif_entry_get_value in exif-entry.c in libexif 0.6.21 has a divide-by-zero error (CVE-2020-12767).

An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF MakerNote handling could lead to information disclosure and crashes (CVE-2020-13112).

An issue was discovered in libexif before 0.6.22. Use of uninitialized memory in EXIF Makernote handling could lead to crashes and potential use-after-free conditions (CVE-2020-13113).

An issue was discovered in libexif before 0.6.22. An unrestricted size in handling Canon EXIF MakerNote data could lead to consumption of large amounts of compute time for decoding EXIF data (CVE-2020-13114).

The libexif package has been updated to version 0.6.22, fixing these issues and other bugs.

Also, the exif package has been updated to version 0.6.22. See the upstream NEWS files for details.

This update for libexif to 0.6.22 fixes the following issues:

Security issues fixed:

• CVE-2016-6328: Fixed an integer overflow in parsing MNOTE entry data of the input file (bsc#1055857).
• CVE-2017-7544: Fixed an out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c (bsc#1059893).
• CVE-2018-20030: Fixed a denial of service by endless recursion (bsc#1120943).
• CVE-2019-9278: Fixed an integer overflow (bsc#1160770).
• CVE-2020-0093: Fixed an out-of-bounds read in exif_data_save_data_entry (bsc#1171847).
• CVE-2020-12767: Fixed a divide-by-zero error in exif_entry_get_value (bsc#1171475).
• CVE-2020-13112: Fixed a time consumption DoS when parsing canon array markers (bsc#1172121).
• CVE-2020-13113: Fixed a potential use of uninitialized memory (bsc#1172105).
• CVE-2020-13114: Fixed various buffer overread fixes due to integer overflows in maker notes (bsc#1172116).

Non-security issues fixed:

• libexif was updated to version 0.6.22:
  • New translations: ms
  • Updated translations for most languages
  • Some useful EXIF 2.3 tag added:
    • EXIF_TAG_GAMMA
    • EXIF_TAG_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_EXPOSURE_TIMES_OF_COMPOSITE_IMAGE
    • EXIF_TAG_GPS_H_POSITIONING_ERROR
    • EXIF_TAG_CAMERA_OWNER_NAME
    • EXIF_TAG_BODY_SERIAL_NUMBER
    • EXIF_TAG_LENS_SPECIFICATION
    • EXIF_TAG_LENS_MAKE
    • EXIF_TAG_LENS_MODEL
    • EXIF_TAG_LENS_SERIAL_NUMBER

This update was imported from the SUSE:SLE-15:Update update project.

These are all security issues fixed in the libexif-devel-0.6.23-1.2 package on the GA media of openSUSE Tumbleweed.

This update for libexif fixes the following issues:

Security issues fixed:

• CVE-2016-6328: Fixed an integer overflow in parsing MNOTE entry data of the input file (bsc#1055857).
• CVE-2017-7544: Fixed an out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c (bsc#1059893).
• CVE-2018-20030: Fixed a denial of service by endless recursion (bsc#1120943).
• CVE-2019-9278: Fixed an integer overflow (bsc#1160770).
• CVE-2020-0093: Fixed an out-of-bounds read in exif_data_save_data_entry (bsc#1171847).
• CVE-2020-12767: Fixed a divide-by-zero error in exif_entry_get_value (bsc#1171475).
• CVE-2020-13112: Fixed a time consumption DoS when parsing canon array markers (bsc#1172121).
• CVE-2020-13113: Fixed a potential use of uninitialized memory (bsc#1172105).
• CVE-2020-13114: Fixed various buffer overread fixes due to integer overflows in maker notes (bsc#1172116).

Non-security issues fixed:

• libexif was updated to version 0.6.22:
  • New translations: ms
  • Updated translations for most languages
  • Some useful EXIF 2.3 tag added:
    • EXIF_TAG_GAMMA
    • EXIF_TAG_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_EXPOSURE_TIMES_OF_COMPOSITE_IMAGE
    • EXIF_TAG_GPS_H_POSITIONING_ERROR
    • EXIF_TAG_CAMERA_OWNER_NAME
    • EXIF_TAG_BODY_SERIAL_NUMBER
    • EXIF_TAG_LENS_SPECIFICATION
    • EXIF_TAG_LENS_MAKE
    • EXIF_TAG_LENS_MODEL
    • EXIF_TAG_LENS_SERIAL_NUMBER

This update for libexif to 0.6.22 fixes the following issues:

Security issues fixed:

• CVE-2016-6328: Fixed an integer overflow in parsing MNOTE entry data of the input file (bsc#1055857).
• CVE-2017-7544: Fixed an out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c (bsc#1059893).
• CVE-2018-20030: Fixed a denial of service by endless recursion (bsc#1120943).
• CVE-2019-9278: Fixed an integer overflow (bsc#1160770).
• CVE-2020-0093: Fixed an out-of-bounds read in exif_data_save_data_entry (bsc#1171847).
• CVE-2020-12767: Fixed a divide-by-zero error in exif_entry_get_value (bsc#1171475).
• CVE-2020-13112: Fixed a time consumption DoS when parsing canon array markers (bsc#1172121).
• CVE-2020-13113: Fixed a potential use of uninitialized memory (bsc#1172105).
• CVE-2020-13114: Fixed various buffer overread fixes due to integer overflows in maker notes (bsc#1172116).

Non-security issues fixed:

• libexif was updated to version 0.6.22:
  • New translations: ms
  • Updated translations for most languages
  • Some useful EXIF 2.3 tag added:
    • EXIF_TAG_GAMMA
    • EXIF_TAG_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_EXPOSURE_TIMES_OF_COMPOSITE_IMAGE
    • EXIF_TAG_GPS_H_POSITIONING_ERROR
    • EXIF_TAG_CAMERA_OWNER_NAME
    • EXIF_TAG_BODY_SERIAL_NUMBER
    • EXIF_TAG_LENS_SPECIFICATION
    • EXIF_TAG_LENS_MAKE
    • EXIF_TAG_LENS_MODEL
    • EXIF_TAG_LENS_SERIAL_NUMBER

This update for libexif to 0.6.22 fixes the following issues:

Security issues fixed:

• CVE-2016-6328: Fixed an integer overflow in parsing MNOTE entry data of the input file (bsc#1055857).
• CVE-2017-7544: Fixed an out-of-bounds heap read vulnerability in exif_data_save_data_entry function in libexif/exif-data.c (bsc#1059893).
• CVE-2018-20030: Fixed a denial of service by endless recursion (bsc#1120943).
• CVE-2019-9278: Fixed an integer overflow (bsc#1160770).
• CVE-2020-0093: Fixed an out-of-bounds read in exif_data_save_data_entry (bsc#1171847).
• CVE-2020-12767: Fixed a divide-by-zero error in exif_entry_get_value (bsc#1171475).
• CVE-2020-13112: Fixed a time consumption DoS when parsing canon array markers (bsc#1172121).
• CVE-2020-13113: Fixed a potential use of uninitialized memory (bsc#1172105).
• CVE-2020-13114: Fixed various buffer overread fixes due to integer overflows in maker notes (bsc#1172116).

Non-security issues fixed:

• libexif was updated to version 0.6.22:
  • New translations: ms
  • Updated translations for most languages
  • Some useful EXIF 2.3 tag added:
    • EXIF_TAG_GAMMA
    • EXIF_TAG_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE
    • EXIF_TAG_SOURCE_EXPOSURE_TIMES_OF_COMPOSITE_IMAGE
    • EXIF_TAG_GPS_H_POSITIONING_ERROR
    • EXIF_TAG_CAMERA_OWNER_NAME
    • EXIF_TAG_BODY_SERIAL_NUMBER
    • EXIF_TAG_LENS_SPECIFICATION
    • EXIF_TAG_LENS_MAKE
    • EXIF_TAG_LENS_MODEL
    • EXIF_TAG_LENS_SERIAL_NUMBER

It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-0093, CVE-2020-0182)

It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this issue to cause a remote denial of service. (CVE-2020-0198)

It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information or cause a crash. (CVE-2020-13112)

It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash. (CVE-2020-13113)

It was discovered libexif incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-13114)