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

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

3 years ago

Modified

Modified

3 years ago

Summary

The remote host is missing an update for the 'libexif' package(s) announced via the DLA-2214-1 advisory.

Insight

Insight

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 Software

Affected Software

'libexif' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

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

Common Vulnerabilities and Exposures (CVE)