VDB-132964 · CVE-2018-10243 · DLA 1751-1

OISF libhtp 0.5.26 htp_parsers.c htp_parse_authorization_digest Header out-of-bounds

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OISF libhtp 0.5.26. It has been declared as critical. The impacted element is the function htp_parse_authorization_digest of the file htp_parsers.c. Executing a manipulation as part of Header can lead to out-of-bounds. The identification of this vulnerability is CVE-2018-10243. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in OISF libhtp 0.5.26. It has been declared as critical. This vulnerability affects the function htp_parse_authorization_digest of the file htp_parsers.c. The manipulation as part of a Header leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

htp_parse_authorization_digest in htp_parsers.c in LibHTP 0.5.26 allows remote attackers to cause a heap-based buffer over-read via an authorization digest header.

The weakness was shared 04/04/2019 (Website). The advisory is shared for download at suricata-ids.org. This vulnerability was named CVE-2018-10243 since 04/20/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 176857 (Debian Security Update for suricata (DLA 1751-1)).

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

The entries VDB-132963 and VDB-132965 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

OISF

Name

libhtp

Version

0.5.26

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/20/2018 🔍
04/04/2019 +349 days 🔍
04/05/2019 +1 days 🔍
08/25/2023 +1603 days 🔍

Sourcesinfo

Advisory: DLA 1751-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10243 (🔍)
GCVE (CVE): GCVE-0-2018-10243
GCVE (VulDB): GCVE-100-132964
See also: 🔍

Entryinfo

Created: 04/05/2019 06:52
Updated: 08/25/2023 10:03
Changes: 04/05/2019 06:52 (62), 05/25/2020 16:28 (1), 08/25/2023 10:03 (3)
Complete: 🔍
Cache ID: 216::103