CVE-2020-13111

Description

NaviServer 4.99.4 to 4.99.19 allows denial of service due to the nsd/driver.c ChunkedDecode function not properly validating the length of a chunk. A remote attacker can craft a chunked-transfer request that will result in a negative value being passed to memmove via the size parameter, causing the process to crash.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.58%
Third-Party Advisory bitbucket.org Third-Party Advisory sourceforge.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://sourceforge.net/p/naviserver/bugs/89/ third party advisory permissions required
https://bitbucket.org/naviserver/naviserver/commits/a5c3079f1d8996d5f34c9384a440acf3519ca3bb third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-13111?
CVE-2020-13111 has been scored as a high severity vulnerability.
How to fix CVE-2020-13111?
To fix CVE-2020-13111, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-13111 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-13111 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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