SB2021051706 - Multiple vulnerabilities in Exiv2 

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Main Vulnerability Database SB2021051706

SB2021051706 - Multiple vulnerabilities in Exiv2

Published: May 17, 2021 Updated: October 6, 2022

Security Bulletin ID SB2021051706
Severity
Low
Patch available
YES
Number of vulnerabilities 7
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 29% Medium 29% Low 43%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 7 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2021-29623)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a read of uninitialized memory flaw. A remote attacker can trick a victim to open a specially crafted image file and gain unauthorized access to sensitive information on the system.


2) Integer overflow (CVE-ID: CVE-2021-31292)

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to integer overflow CrwMap::encode0x1810 of Exiv2. A remote attacker can pass specially crafted data to the application, trigger integer overflow and crash the application.


3) Out-of-bounds read (CVE-ID: CVE-2021-29473)

The vulnerability allows a remote attacker to gain access to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when processing Exif, IPTC, XMP and ICC image metadata. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and crash the affected application.


4) Heap-based buffer overflow (CVE-ID: CVE-2021-29457)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can trick the victim top open a specially crafted image, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `insert`.


5) Buffer overflow (CVE-ID: CVE-2021-3482)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing EXIF data in Jp2Image::readMetadata() in jp2image.cpp. A remote attacker can create a specially crafted EXIF document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


6) Heap-based buffer overflow (CVE-ID: CVE-2021-31291)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in jp2image.cpp in Exiv2. A remote attacker can use crafted metadata to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


7) Resource exhaustion (CVE-ID: CVE-2021-32617)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application uses an inefficient algorithm (quadratic complexity) when writing metadata into a crafted image file. A remote attacker can trick trigger resource exhaustion and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References