Vulnerabilities > CVE-2017-6960 - Integer Overflow or Wraparound vulnerability in multiple products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
apng2gif-project
debian
canonical
CWE-190
nessus

Summary

An issue was discovered in apng2gif 1.7. There is an integer overflow resulting in a heap-based buffer over-read, related to the load_apng function and the imagesize variable.

Vulnerable Configurations

Part Description Count
Application
Apng2Gif_Project
1
OS
Debian
1
OS
Canonical
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2165.NASL
    descriptionAn issue has been found in apng2gif, a tool for converting APNG images to animated GIF format. One of the function contained an integer overflow resulting in a heap-based buffer over-read. For Debian 8
    last seen2020-04-07
    modified2020-04-02
    plugin id135100
    published2020-04-02
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135100
    titleDebian DLA-2165-1 : apng2gif security update
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-981.NASL
    descriptionIt was discovered that apng2gif was vulnerable to an integer overflow resulting in a heap-based buffer over-read/write. A remote attacker could use this flaw to cause a denial of service (application crash) via a crafted APNG file. For Debian 7
    last seen2020-03-17
    modified2017-06-08
    plugin id100673
    published2017-06-08
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100673
    titleDebian DLA-981-1 : apng2gif security update