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CVE-2020-13111

HIGH
7.5
CVSS Score
Published: May 16, 2020 at 02:50 PM UTC
Updated: June 17, 2026 at 02:52 AM UTC
1 product affected across 1 vendorNaviserver

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Naviserver· Naviserver Project
95%
4.99.4 ≤ v ≤ 4.99.19

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://bitbucket.org/naviserver/naviserver/commits/a5c3079f1d8996d5f34c9384a440acf3519ca3bb
x_refsource_MISCPermissions RequiredThird Party Advisory
Source: [email protected]
https://sourceforge.net/p/naviserver/bugs/89/

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-787

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