HAProxy up to 1.8.14 dns.c Crafted Packet infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in HAProxy up to 1.8.14 and classified as problematic. This affects an unknown part of the file dns.c. This manipulation as part of Crafted Packet causes infinite loop. This vulnerability is handled as CVE-2018-20103. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in HAProxy up to 1.8.14 (Firewall Software) and classified as problematic. Affected by this vulnerability is an unknown part of the file dns.c. The manipulation as part of a Crafted Packet leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.

The bug was discovered 12/12/2018. The weakness was released 12/12/2018 (Website). The advisory is shared at git.haproxy.org. This vulnerability is known as CVE-2018-20103 since 12/12/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 121153 (openSUSE Security Update : haproxy (openSUSE-2019-44)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197342 (Ubuntu Security Notification for Haproxy Vulnerabilities (USN-3858-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121153) and SecurityFocus (BID 106280†). Entries connected to this vulnerability are available at VDB-127920 and VDB-131951. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
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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Nessus ID: 121153
Nessus Name: openSUSE Security Update : haproxy (openSUSE-2019-44)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 58df5aea0a0c926b2238f65908f5e9f83d1cca25

Timelineinfo

12/12/2018 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/13/2018 +1 days 🔍
01/14/2019 +32 days 🔍
03/23/2019 +68 days 🔍
06/18/2023 +1548 days 🔍

Sourcesinfo

Advisory: RHSA-2019:1436
Status: Confirmed

CVE: CVE-2018-20103 (🔍)
GCVE (CVE): GCVE-0-2018-20103
GCVE (VulDB): GCVE-100-127921
SecurityFocus: 106280 - HAProxy 'dns.c' Stack Exhaustion Denial Of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/13/2018 10:07
Updated: 06/18/2023 16:22
Changes: 12/13/2018 10:07 (73), 04/20/2020 16:51 (5), 06/18/2023 16:22 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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