TI-2023-09843 Aliases CVE-2023-24068 GHSA-wrv4-jq6j-75pm

Signal Desktop before 6.2.0 on Windows, Linux, and macOS allows an attacker to modify…

HIGH 69Published 2023-01-23 · Updated 2024-08-22

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Signal Desktop before 6.2.0 on Windows, Linux, and macOS allows an attacker to modify conversation attachments within the attachments.noindex directory. Client mechanisms fail to validate modifications of existing cached files, resulting in an attacker's ability to insert malicious code into pre-existing attachments or replace them completely. A threat actor can forward the existing attachment in the corresponding conversation to external groups, and the name and size of the file will not change, allowing the malware to masquerade as another file. NOTE: the vendor disputes the relevance of this finding because the product is not intended to protect against adversaries with this degree of local access.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00376 31st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:a:signal:signal-desktop::::::::	up to 6.2.0	Vulnerable	Signal
cpe:2.3:o:apple:macos:-:::::::*	not specified by NVD	Running on	Apple
cpe:2.3:o:linux:linux_kernel:-:::::::*	not specified by NVD	Running on	Linux
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:signal:signal-desktop:*:*:*:*:*:*:*:* Versions up to 6.2.0 Vulnerable ·Signal
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-24068
2026-10-03 Alias added: GHSA-wrv4-jq6j-75pm

References

Exploit 1

https://johnjhacking.com/blog/cve-2023-24068-cve-2023-24069/

Advisory 3

TI-2023-09844 Signal Desktop before 6.2.0 on Windows, Linux, and macOS allows an attacker to obtain… CVSS 3.1LOW 3.3
TI-2019-14393 Signal Desktop before 1.29.1 on Windows allows local users to gain privileges by creating… CVSS 3.1HIGH 7.3
TI-2019-07336 Open Whisper Signal (aka Signal-Desktop) through 1.23.1 and the Signal Private Messenger… CVSS 3.0MEDIUM 6.5
TI-2018-07885 Open Whisper Signal (aka Signal-Desktop) through 1.10.1 allows XSS via a resource… CVSS 3.0MEDIUM 6.1
TI-2018-07792 js/views/message_view.js in Open Whisper Signal (aka Signal-Desktop) before 1.10.1 allows XSS via a URL. CVSS 3.0MEDIUM 6.1
TI-2018-10135 Open Whisper Signal (aka Signal-Desktop) before 1.15.0-beta.10 allows information leakage. CVSS 3.0MEDIUM 4.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences