CVE-2020-13111 is a denial-of-service vulnerability affecting NaviServer versions 4.99.4 through 4.99.19. It stems from improper length validation in the nsd/driver.c ChunkedDecode function, allowing a remote attacker to craft a malicious chunked-transfer request. This can lead to a negative value being passed to memmove, causing the NaviServer process to crash. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.99.4, <= 4.99.19CPE matchmatch criteria | cpe:2.3:a:naviserver_project:naviserver:*:*:*:*:*:*:*:* |
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.
Remediation records are not available for this CVE.