389-ds-base up to 1.4.1.2 Timeout LDAP Request memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in 389-ds-base up to 1.4.1.2. This impacts an unknown function of the component Timeout Handler. Executing a manipulation as part of LDAP Request can lead to memory corruption. This vulnerability is registered as CVE-2019-3883. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in 389-ds-base up to 1.4.1.2. It has been declared as problematic. This vulnerability affects some unknown functionality of the component Timeout Handler. The manipulation as part of a LDAP Request leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. CVE summarizes:

In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers, resulting in a Denial of Service.

The bug was discovered 04/16/2019. The weakness was published 04/17/2019 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2019-3883 since 01/03/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176902 (Debian Security Update for 389-ds-base (DLA 1779-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2019 🔍
04/16/2019 +103 days 🔍
04/17/2019 +1 days 🔍
04/17/2019 +0 days 🔍
08/29/2023 +1595 days 🔍

Sourcesinfo

Advisory: RHSA-2019:1896
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-3883 (🔍)
GCVE (CVE): GCVE-0-2019-3883
GCVE (VulDB): GCVE-100-133450

Entryinfo

Created: 04/17/2019 22:42
Updated: 08/29/2023 14:51
Changes: 04/17/2019 22:42 (58), 05/30/2020 09:42 (2), 08/29/2023 14:49 (3), 08/29/2023 14:51 (12)
Complete: 🔍
Cache ID: 216::103

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