CVE-2023-25136
6.5MEDIUM
Key Information:
- Vendor
- Openssh
- Status
- Openssh
- Vendor
- CVE Published:
- 3 February 2023
Badges
πΎ Exploit Existsπ‘ Public PoC
Summary
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V3.1
Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged
Timeline
- π‘
Public PoC available
- πΎ
Exploit known to exist
Vulnerability published
Vulnerability Reserved