PT-2023-24959 · .Net · Greenshot

P4R4Bellum · Published 2023-08-01 · Updated 2025-10-02 · CVE-2023-34634

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Greenshot versions 1.2.10 and below

Description The issue allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.

Recommendations For Greenshot versions 1.2.10 and below, as a temporary workaround, consider restricting the opening of .greenshot files from untrusted sources until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2023-34634

Affected Products

Greenshot

References · 13

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/greenshot_deserialize_cve_2023_34634.rb · Exploit
• 🔥 http://packetstormsecurity.com/files/173825/GreenShot-1.2.10-Arbitrary-Code-Execution.html · Exploit
• 🔥 https://exploit-db.com/exploits/51633 · Exploit
• https://github.com/greenshot/greenshot/commit/a152e2883fca7f78051b3bd6b1e5cc57355cb44c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-34634 · Security Note
• https://osv.dev/vulnerability/CVE-2023-34634 · Vendor Advisory
• https://t.me/cibsecurity/67517 · Telegram Post
• https://reddit.com/r/sysadmin/comments/1m7keot/greenshot_13_released_fixes_cve202334634 · Reddit Post
• https://t.me/cybersecuritytechnologies/8883 · Telegram Post
• https://twitter.com/kylefleming217/status/1692463170110042598 · Twitter Post
• https://greenshot.atlassian.net/browse/BUG-3061 · Note
• http://packetstormsecurity.com/files/174222/Greenshot-1.3.274-Deserialization-Command-Execution.html · Note
• https://t.me/cveNotify/137230 · Telegram Post