CVE-2019-0203

subversion: NULL pointer dereference in svnserve leading to an unauthenticated remote DoS

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Apache Subversion versions up to and including 1.9.10, 1.10.4, 1.12.0, Subversion's svnserve server process may exit when a client sends certain sequences of protocol commands. This can lead to disruption for users of the server.

En Apache Subversion versiones hasta 1.9.10, 1.10.4, 1.12.0 incluyéndolas, el proceso del servidor svnserve de Subversion puede cerrarse cuando un cliente envía determinadas secuencias de comandos de protocolo. Esto puede conllevar a interrupciones para los usuarios del servidor.

A flaw was found in subversion. A remote, unauthenticated user can cause a null-pointer-dereference in svnserve by sending a certain sequences of protocol commands to the server. This results in a denial of service in some server configurations, specifically when anonymous access is enabled. The highest threat from this vulnerability is to system availability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-11-14 CVE Reserved
2019-07-31 CVE Published
2024-08-01 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference
CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
http://subversion.apache.org/security/CVE-2019-0203-advisory.txt	2021-07-21

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2019-0203	2019-08-15
https://bugzilla.redhat.com/show_bug.cgi?id=1733073	2019-08-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Subversion Search vendor "Apache" for product "Subversion"				<= 1.9.10 Search vendor "Apache" for product "Subversion" and version " <= 1.9.10"		-		Affected
Apache Search vendor "Apache"		Subversion Search vendor "Apache" for product "Subversion"				>= 1.10.0 <= 1.10.4 Search vendor "Apache" for product "Subversion" and version " >= 1.10.0 <= 1.10.4"		-		Affected
Apache Search vendor "Apache"		Subversion Search vendor "Apache" for product "Subversion"				>= 1.11.0 <= 1.11.1 Search vendor "Apache" for product "Subversion" and version " >= 1.11.0 <= 1.11.1"		-		Affected
Apache Search vendor "Apache"		Subversion Search vendor "Apache" for product "Subversion"				1.12.0 Search vendor "Apache" for product "Subversion" and version "1.12.0"		-		Affected