CVE-2012-0021 describes a denial-of-service vulnerability in the Apache HTTP Server versions 2.2.17 through 2.2.21, specifically within the mod_log_config module when a threaded MPM is in use. A remote attacker can crash the daemon by sending a malformed cookie that lacks both a name and a value, exploiting improper handling of the %{}C format string. This vulnerability has a low CVSS score of 2.6, indicating a partial availability impact with high attack complexity and no authentication required. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.2.17CPE matchmatch criteria | cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:* | ||
2.2.18CPE matchmatch criteria | cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:* | ||
2.2.19CPE matchmatch criteria | cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:* | ||
2.2.20CPE matchmatch criteria | cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:* | ||
2.2.21CPE matchmatch criteria | cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:H/Au:N/C:N/I:N/A:P
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.