PT-2018-11169 · Cryptolib · Cryptolib

Published 2018-06-15 · Updated 2024-08-05 · CVE-2018-12433

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions cryptlib versions 3.4.4 and earlier

Description The issue allows a memory-cache side-channel attack on DSA and ECDSA signatures, also known as the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host. It's noted that the vendor does not include side-channel attacks within its threat model.

Recommendations For versions 3.4.4 and earlier, as a temporary workaround, consider restricting access to sensitive operations that rely on DSA and ECDSA signatures until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Weakness Enumeration

CWE-320

CWE-200

Related Identifiers

CVE-2018-12433

Affected Products

Cryptolib

References · 4

• 🔥 https://nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem · Exploit
• https://osv.dev/vulnerability/CVE-2018-12433 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-12433 · Security Note
• https://t.me/cvenotify/89142 · Telegram Post