CVE-2020-36227 is a denial-of-service vulnerability affecting OpenLDAP versions prior to 2.4.57, including various Apple and Debian Linux distributions utilizing OpenLDAP. An unauthenticated attacker can trigger an infinite loop in the slapd daemon by sending a crafted cancel_extop Cancel operation. This flaw has a high CVSS score of 7.5 due to its network-based attack vector, low attack complexity, and high impact on availability. While its EPSS score is notably high, indicating a higher likelihood of exploitation compared to most CVEs, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.4.57CPE matchmatch criteria | cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* | ||
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:*:*:*:*:*:*:* | ||
>= 11.1, < 11.4CPE matchmatch criteria | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Third-Party Package Updates in Splunk Enterprise - October 2024
Oct 14, 2024openldap: Infinite loop in slapd with the cancel_extop Cancel operation
Jan 26, 2021A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation resulting in denial of service.
Jan 12, 2021