Vulnerabilities > CVE-2017-6960 - Integer Overflow or Wraparound vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH 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 | 1 | |
| OS | 1 | |
| OS | 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 family Debian Local Security Checks NASL id DEBIAN_DLA-2165.NASL description An 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 seen 2020-04-07 modified 2020-04-02 plugin id 135100 published 2020-04-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135100 title Debian DLA-2165-1 : apng2gif security update NASL family Debian Local Security Checks NASL id DEBIAN_DLA-981.NASL description It 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 seen 2020-03-17 modified 2017-06-08 plugin id 100673 published 2017-06-08 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/100673 title Debian DLA-981-1 : apng2gif security update