Vulnerability · Published Jul 12, 2021 · Assigned by GitHub_M

CVE-2021-32705Lack of ratelimit on public DAV endpoint

Medium 5.3

In plain English

A medium-severity security flaw in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)1.7%top 22.7% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, there was a lack of ratelimiting on the public DAV endpoint. This may have allowed an attacker to enumerate potentially valid share tokens or credentials. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	< 19.0.13>= 20.0.0, < 20.0.11>= 21.0.0, < 21.0.3

Weakness: CWE-799 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fjv7-283f-5m54 x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/27610 x_refsource_MISC
https://hackerone.com/reports/1192159 x_refsource_MISC
FEDORA-2021-9b421b78af vendor-advisory, x_refsource_FEDORA
FEDORA-2021-6f327296fe vendor-advisory, x_refsource_FEDORA
GLSA-202208-17 vendor-advisory, x_refsource_GENTOO