CVE-2021-28091 is a high-severity cryptographic signature verification vulnerability affecting all versions of the Lasso library prior to 2.7.0, impacting various Debian and Fedora-based products. With a CVSS score of 7.5, this vulnerability allows an unauthenticated attacker to achieve high integrity impact over a network with low attack complexity. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.7.0CPE matchmatch criteria | cpe:2.3:a:entrouvert:lasso:*:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
CVE-2021-28091
Jan 11, 2022Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.
Jun 8, 2021lasso: XML signature wrapping vulnerability when parsing SAML responses
Jun 1, 2021