CVE-2017-11424 is a high-severity vulnerability affecting PyJWT versions 1.5.0 and below, specifically impacting Debian Linux and PyJWT projects. The flaw in HMACAlgorithm.prepare_key allows for symmetric/asymmetric key confusion attacks when PKCS1 PEM encoded public keys are used, as the "invalid_strings" check fails to properly account for their format. This enables attackers to forge JSON Web Tokens (JWTs) from scratch. The CVSS score of 7.5 indicates a network-based attack with low complexity, requiring no user interaction, and leading to high integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.5.0CPE matchmatch criteria | cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/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.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.