GNU Less up to 608 ANSI Escape escape output

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU Less up to 608. It has been declared as problematic. This impacts an unknown function of the component ANSI Escape Handler. Such manipulation leads to escape output. This vulnerability is traded as CVE-2022-46663. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GNU Less up to 608. Affected by this issue is some unknown processing of the component ANSI Escape Handler. The manipulation with an unknown input leads to a escape output vulnerability. Using CWE to declare the problem leads to CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In GNU Less before 609, crafted data can result in "less -R" not filtering ANSI escape sequences sent to the terminal.

The weakness was shared 02/08/2023 as a78e1351113cef564d790a730d657a321624d79c. The advisory is available at github.com. This vulnerability is handled as CVE-2022-46663 since 12/06/2022. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 276270 (TencentOS Server 4: less (TSSA-2024:0610)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 609 eliminates this vulnerability. Applying the patch a78e1351113cef564d790a730d657a321624d79c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (276270). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Escape output
CWE: CWE-116 / CWE-74 / CWE-707
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: 276270
Nessus Name: TencentOS Server 4: less (TSSA-2024:0610)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Less 609
Patch: a78e1351113cef564d790a730d657a321624d79c

Timelineinfo

12/06/2022 🔍
02/08/2023 +64 days 🔍
02/08/2023 +0 days 🔍
11/24/2025 +1020 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: a78e1351113cef564d790a730d657a321624d79c
Status: Confirmed

CVE: CVE-2022-46663 (🔍)
GCVE (CVE): GCVE-0-2022-46663
GCVE (VulDB): GCVE-100-220394

Entryinfo

Created: 02/08/2023 08:28
Updated: 11/24/2025 05:37
Changes: 02/08/2023 08:28 (43), 03/06/2023 14:35 (11), 11/24/2025 05:37 (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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