VDB-159016 · CVE-2020-12460 · GCVE-0-2020-12460

OpenDMARC up to 1.3.2/1.4.0-Beta1 opendmarc_xml_parse Metadata out-of-bounds write

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 OpenDMARC up to 1.3.2/1.4.0-Beta1 and classified as critical. Affected by this vulnerability is the function opendmarc_xml_parse. Executing a manipulation as part of Metadata can lead to out-of-bounds write. This vulnerability is handled as CVE-2020-12460. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in OpenDMARC up to 1.3.2/1.4.0-Beta1 and classified as critical. This vulnerability affects the function opendmarc_xml_parse. The manipulation as part of a Metadata leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes 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:

OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report. This can cause remote memory corruption when a '\0' byte overwrites the heap metadata of the next chunk and its PREV_INUSE flag.

The weakness was released 07/27/2020. This vulnerability was named CVE-2020-12460 since 04/29/2020. 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.

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

OpenDMARC

Version

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

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/29/2020 🔍
07/27/2020 +89 days 🔍
07/28/2020 +1 days 🔍
07/28/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-12460 (🔍)
GCVE (CVE): GCVE-0-2020-12460
GCVE (VulDB): GCVE-100-159016

Entryinfo

Created: 07/28/2020 07:25
Updated: 07/28/2020 07:30
Changes: 07/28/2020 07:25 (35), 07/28/2020 07:30 (17)
Complete: 🔍
Cache ID: 216::103