Vulnerability Details : CVE-2020-13111
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.
Vulnerability category: Memory CorruptionInput validationDenial of service
Products affected by CVE-2020-13111
- Naviserver Project » NaviserverVersions from including (>=) 4.99.4 and up to, including, (<=) 4.99.19cpe:2.3:a:naviserver_project:naviserver:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-13111
0.58%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-13111
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-13111
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-13111
-
https://bitbucket.org/naviserver/naviserver/commits/a5c3079f1d8996d5f34c9384a440acf3519ca3bb
naviserver / naviserver / commit / a5c3079f1d89 — BitbucketPatch;Third Party Advisory
-
https://sourceforge.net/p/naviserver/bugs/89/
SourceForge.net: Log In to SourceForge.netPermissions Required;Third Party Advisory
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