5.5
MEDIUM
CVE-2017-14121
Unrar NULL Pointer Dereference Vulnerability
Description

The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.

INFO

Published Date :

Sept. 3, 2017, 8:29 p.m.

Last Modified :

Nov. 21, 2024, 3:12 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2017-14121 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Rarlab unrar
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2017-14121.

URL Resource
http://www.openwall.com/lists/oss-security/2017/08/20/1 Mailing List Third Party Advisory
https://bugs.debian.org/874061 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/08/20/1 Mailing List Third Party Advisory
https://bugs.debian.org/874061 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2017-14121 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-14121 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2017/08/20/1
    Added Reference https://bugs.debian.org/874061
    Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Oct. 18, 2021

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Sep. 30, 2021

    Action Type Old Value New Value
    Changed Description The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a specially crafted RAR archive. The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.
  • Modified Analysis by [email protected]

    Feb. 26, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Removed CVSS V3 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 19, 2021

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00026.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 06, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugs.debian.org/874061 No Types Assigned https://bugs.debian.org/874061 Issue Tracking, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2017/08/20/1 No Types Assigned http://www.openwall.com/lists/oss-security/2017/08/20/1 Mailing List, Third Party Advisory
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:rarlab:unrar:0.0.1:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2017-14121 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2017-14121 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.14 }} 0.00%

score

0.47248

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability