Mozilla Firefox up to 115.5 on Unix symlink

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Mozilla Firefox up to 115.5 on Unix. The affected element is an unknown function. Executing a manipulation can lead to symlink. This vulnerability is handled as CVE-2023-6857. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 115.5 on Unix (Web Browser) and classified as critical. This vulnerability affects an unknown code block. 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. CVE summarizes:

When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary. *This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

The weakness was released 12/19/2023. The advisory is available at mozilla.org. This vulnerability was named CVE-2023-6857 since 12/15/2023. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 214469 (Debian dla-3697 : firefox-esr - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 115.6 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the vulnerability database at Tenable (214469). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214469
Nessus Name: Debian dla-3697 : firefox-esr - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 115.6

Timelineinfo

12/15/2023 🔍
12/19/2023 +4 days 🔍
12/19/2023 +0 days 🔍
01/22/2025 +400 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: DLA 3697-1
Status: Confirmed

CVE: CVE-2023-6857 (🔍)
GCVE (CVE): GCVE-0-2023-6857
GCVE (VulDB): GCVE-100-248386

Entryinfo

Created: 12/19/2023 16:32
Updated: 01/22/2025 20:27
Changes: 12/19/2023 16:32 (42), 01/12/2024 16:22 (1), 01/12/2024 16:29 (11), 01/22/2025 20:27 (17)
Complete: 🔍
Cache ID: 216::103

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

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