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Expanded filter of CBC ciphers to flag for the Terrapin vulnerability.

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This commit is contained in:
Joe Testa 2023-12-21 15:30:43 -05:00
parent 164356e776
commit 44393c56b3
2 changed files with 5 additions and 2 deletions
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3
README.md
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@ -178,6 +178,9 @@ For convenience, a web front-end on top of the command-line tool is available at
## ChangeLog ## ChangeLog
### v3.2.0 (???)
- Expanded filter of CBC ciphers to flag for the Terrapin vulnerability. It now includes more rarely found ciphers.
### v3.1.0 (2023-12-20) ### v3.1.0 (2023-12-20)
- Added test for the Terrapin message prefix truncation vulnerability ([CVE-2023-48795](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-48795)). - Added test for the Terrapin message prefix truncation vulnerability ([CVE-2023-48795](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-48795)).
- Dropped support for Python 3.7 (EOL was reached in June 2023). - Dropped support for Python 3.7 (EOL was reached in June 2023).

4
src/ssh_audit/ssh_audit.py
View File

@ -491,7 +491,7 @@ def post_process_findings(banner: Optional[Banner], algs: Algorithms, client_aud
if algs.ssh2kex is not None: if algs.ssh2kex is not None:
ciphers_supported = algs.ssh2kex.client.encryption if client_audit else algs.ssh2kex.server.encryption ciphers_supported = algs.ssh2kex.client.encryption if client_audit else algs.ssh2kex.server.encryption
for cipher in ciphers_supported: for cipher in ciphers_supported:
if cipher.endswith("-cbc"): if cipher.endswith("-cbc") or cipher.endswith("-cbc@openssh.org") or cipher.endswith("-cbc@ssh.com") or cipher == "rijndael-cbc@lysator.liu.se":
ret.append(cipher) ret.append(cipher)
return ret return ret
@ -501,7 +501,7 @@ def post_process_findings(banner: Optional[Banner], algs: Algorithms, client_aud
ret = [] ret = []
for cipher in db["enc"]: for cipher in db["enc"]:
if cipher.endswith("-cbc") and cipher not in _get_cbc_ciphers_enabled(algs): if (cipher.endswith("-cbc") or cipher.endswith("-cbc@openssh.org") or cipher.endswith("-cbc@ssh.com") or cipher == "rijndael-cbc@lysator.liu.se") and cipher not in _get_cbc_ciphers_enabled(algs):
ret.append(cipher) ret.append(cipher)
return ret return ret