GNOME GLib up to 2.66.7 g_file_replace symlink

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in GNOME GLib up to 2.66.7. The impacted element is the function g_file_replace. Executing a manipulation can lead to symlink. This vulnerability appears as CVE-2021-28153. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GNOME GLib up to 2.66.7. It has been declared as critical. This vulnerability affects the function g_file_replace. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 03/12/2021. The advisory is available at gitlab.gnome.org. This vulnerability was named CVE-2021-28153. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 291754 (MiracleLinux 8 : glib2-2.56.4-156.el8 (AXSA:2021-2834:05)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.66.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (291754). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 291754
Nessus Name: MiracleLinux 8 : glib2-2.56.4-156.el8 (AXSA:2021-2834:05)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GLib 2.66.8

Timelineinfo

03/11/2021 🔍
03/12/2021 +1 days 🔍
03/12/2021 +0 days 🔍
01/20/2026 +1775 days 🔍

Sourcesinfo

Vendor: gnome.org

Advisory: gitlab.gnome.org
Status: Confirmed

CVE: CVE-2021-28153 (🔍)
GCVE (CVE): GCVE-0-2021-28153
GCVE (VulDB): GCVE-100-171178

Entryinfo

Created: 03/12/2021 08:14
Updated: 01/20/2026 12:04
Changes: 03/12/2021 08:14 (38), 03/31/2021 21:36 (5), 03/31/2021 21:39 (18), 01/20/2026 12:04 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!