6.5
MEDIUM
CVE-2018-20532
Libsolv NULL Pointer Dereference Denial of Service Vulnerability
Description

There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.

INFO

Published Date :

Dec. 28, 2018, 4:29 p.m.

Last Modified :

Nov. 21, 2024, 4:01 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2018-20532 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 Canonical ubuntu_linux
1 Opensuse libsolv
References to Advisories, Solutions, and Tools

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-2018-20532 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-20532 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://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
    Added Reference https://access.redhat.com/errata/RHSA-2019:2290
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1652605
    Added Reference https://github.com/openSUSE/libsolv/pull/291
    Added Reference https://usn.ubuntu.com/3916-1/
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Aug. 18, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 06, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:2290 [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 29, 2019

    Action Type Old Value New Value
    Changed Reference Type https://usn.ubuntu.com/3916-1/ No Types Assigned https://usn.ubuntu.com/3916-1/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 22, 2019

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3916-1/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 06, 2019

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/openSUSE/libsolv/pull/291 No Types Assigned https://github.com/openSUSE/libsolv/pull/291 Patch, Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1652605 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1652605 Exploit, Issue Tracking
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:* versions up to (including) 0.7.2
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-2018-20532 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-2018-20532 weaknesses.

Exploit Prediction

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

0.26 }} -0.04%

score

0.65055

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability