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Debian Security Advisory DSA 2559-1 (libexif)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to libexif announced via advisory DSA 2559-1.
Insight
Insight
Several vulnerabilities were found in libexif, a library used to parse EXIF meta-data on camera files. CVE-2012-2812: A heap-based out-of-bounds array read in the exif_entry_get_value function allows remote attackers to cause a denial of service or possibly obtain potentially sensitive information from process memory via an image with crafted EXIF tags. CVE-2012-2813: A heap-based out-of-bounds array read in the exif_convert_utf16_to_utf8 function allows remote attackers to cause a denial of service or possibly obtain potentially sensitive information from process memory via an image with crafted EXIF tags. CVE-2012-2814: A buffer overflow in the exif_entry_format_value function allows remote attackers to cause a denial of service or possibly execute arbitrary code via an image with crafted EXIF tags. CVE-2012-2836: A heap-based out-of-bounds array read in the exif_data_load_data function allows remote attackers to cause a denial of service or possibly obtain potentially sensitive information from process memory via an image with crafted EXIF tags. CVE-2012-2837: A divide-by-zero error in the mnote_olympus_entry_get_value function while formatting EXIF maker note tags allows remote attackers to cause a denial of service via an image with crafted EXIF tags. CVE-2012-2840: An off-by-one error in the exif_convert_utf16_to_utf8 function allows remote attackers to cause a denial of service or possibly execute arbitrary code via an image with crafted EXIF tags. CVE-2012-2841: An integer underflow in the exif_entry_get_value function can cause a heap overflow and potentially arbitrary code execution while formatting an EXIF tag, if the function is called with a buffer size parameter equal to zero or one. For the stable distribution (squeeze), these problems have been fixed in version 0.6.19-1+squeeze1. For the testing distribution (wheezy), these problems have been fixed in version 0.6.20-3. For the unstable distribution (sid), these problems have been fixed in version 0.6.20-3.
Solution
Solution
We recommend that you upgrade your libexif packages.