CVE-2023-34758 – github.com/bishopfox/sliver

Package

Manager: go
Name: github.com/bishopfox/sliver
Vulnerable Version: >=1.5.0 <1.5.40

Severity

Level: Critical

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00053 pctl0.16423

Details

Silver vulnerable to MitM attack against implants due to a cryptography vulnerability ### Summary The current cryptography implementation in Sliver up to version 1.5.39 allows a MitM with access to the corresponding implant binary to execute arbitrary codes on implanted devices via intercepted and crafted responses. (Reserved CVE ID: CVE-2023-34758) ### Details Please see [the PoC repo](https://github.com/tangent65536/Slivjacker). ### PoC Please also see [the PoC repo](https://github.com/tangent65536/Slivjacker). To setup a simple PoC environment, 1. Generate an implant with its C2 set to the PoC server's address and copy the embedded private implant key and public server key into the config json. 2. Run the implant on a separate VM and a `notepad.exe` window should pop up on the implanted VM. ### Impact A successful attack grants the attacker permission to execute arbitrary code on the implanted device. ### References https://github.com/BishopFox/sliver/blob/master/implant/sliver/cryptography/implant.go https://github.com/BishopFox/sliver/blob/master/implant/sliver/cryptography/crypto.go https://github.com/tangent65536/Slivjacker ### Credits [Ting-Wei Hsieh](https://github.com/tangent65536) from [CHT Security Co. Ltd.](https://www.chtsecurity.com/?lang=en)

Metadata

Created: 2023-06-21T22:08:34Z
Modified: 2024-11-18T16:26:30Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/06/GHSA-8jxm-xp43-qh3q/GHSA-8jxm-xp43-qh3q.json
CWE IDs: ["CWE-327"]
Alternative ID: GHSA-8jxm-xp43-qh3q
Finding: F052
Auto approve: 1