CVE-2018-6594
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-6594
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-6594.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 3.4.11-1 |
| debian | bullseye | fixed | 3.4.11-1 |
| debian | forky | fixed | 3.4.11-1 |
| debian | sid | fixed | 3.4.11-1 |
| debian | trixie | fixed | 3.4.11-1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-6594
- https://github.com/dlitz/pycrypto/issues/253
- https://github.com/TElgamal/attack-on-pycrypto-elgamal
- https://github.com/advisories/GHSA-6528-wvf6-f6qg
- https://github.com/dlitz/pycrypto
- https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2018-97.yaml
- https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
- https://security.gentoo.org/glsa/202007-62
- https://usn.ubuntu.com/3616-1
- https://usn.ubuntu.com/3616-2
- https://www.suse.com/security/cve/CVE-2018-6594.html
- https://usn.ubuntu.com/3616-1/
- https://usn.ubuntu.com/3616-2/
- https://security-tracker.debian.org/tracker/CVE-2018-6594
Verify integrity in audit chain (admin only). AS-IS.