CVE-2009-1891 describes a denial-of-service vulnerability in the mod_deflate module of Apache httpd versions 2.2.11 and earlier, affecting various distributions including Canonical, Debian, Fedora, and Red Hat. The vulnerability allows remote attackers to consume excessive CPU resources by forcing the server to continue compressing large files even after a client disconnects. With a CVSS score of 7.1, this vulnerability is considered high severity due to its network-based attack vector, medium attack complexity, and high impact on availability. There is no evidence of active exploitation, nor are there any known public exploit tools like Metasploit or ExploitDB entries, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.0.35, < 2.0.64CPE matchmatch criteria | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* | ||
>= 2.2.0, < 2.2.12CPE matchmatch criteria | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | ||
6.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:C
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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.