GNOME glib 2.56.1 gmarkup.c g_markup_parse_context_parse out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNOME glib 2.56.1 and classified as critical. Affected by this issue is the function g_markup_parse_context_parse of the file gmarkup.c. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2018-16429. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in GNOME glib 2.56.1. Affected by this vulnerability is the function g_markup_parse_context_parse of the file gmarkup.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

GNOME GLib 2.56.1 has an out-of-bounds read vulnerability in g_markup_parse_context_parse() in gmarkup.c, related to utf8_str().

The bug was discovered 04/08/2018. The weakness was presented 09/04/2018 by Venustech with Adlab of Venustech (Website). The advisory is shared at gitlab.gnome.org. This vulnerability is known as CVE-2018-16429 since 09/03/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 148 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119334 (SUSE SLES11 Security Update : glib2 (SUSE-SU-2018:3966-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277553 (Fedora Security Update for chromium (FEDORA-2018-f76e6d17f1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119334) and SecurityFocus (BID 105210†). See VDB-123552, VDB-124463 and VDB-124464 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 119334
Nessus Name: SUSE SLES11 Security Update : glib2 (SUSE-SU-2018:3966-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: gitlab.gnome.org

Timelineinfo

04/08/2018 🔍
09/03/2018 +147 days 🔍
09/03/2018 +0 days 🔍
09/03/2018 +0 days 🔍
09/04/2018 +0 days 🔍
09/04/2018 +0 days 🔍
12/03/2018 +90 days 🔍
12/04/2018 +1 days 🔍
05/06/2023 +1614 days 🔍

Sourcesinfo

Vendor: gnome.org

Advisory: cec71705406f0b2790422f0c1aa0ff3b4b464b1b
Researcher: Venustech
Organization: Adlab of Venustech
Status: Confirmed

CVE: CVE-2018-16429 (🔍)
GCVE (CVE): GCVE-0-2018-16429
GCVE (VulDB): GCVE-100-123553
SecurityFocus: 105210 - GNOME GLib 'gmarkup.c' Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/04/2018 15:46
Updated: 05/06/2023 20:03
Changes: 09/04/2018 15:46 (75), 03/20/2020 13:27 (6), 05/06/2023 19:56 (5), 05/06/2023 20:03 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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