CVE-2019-12827 : Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allo

Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allows remote authenticated users to crash Asterisk by sending a specially crafted SIP MESSAGE message.

Published 2019-07-12 20:15:11

Updated 2021-07-21 11:39:24

Source MITRE

View at NVD, CVE.org

Vulnerability category: OverflowMemory Corruption

Threat overview for CVE-2019-12827

Top countries where our scanners detected CVE-2019-12827

Top open port discovered on systems with this issue 8088

IPs affected by CVE-2019-12827 11,846

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-12827!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-12827

Probability of exploitation activity in the next 30 days: 4.72%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 92 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2019-12827

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:L/Au:S/C:N/I:N/A:P	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
6.5	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-12827

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-12827

http://downloads.digium.com/pub/security/AST-2019-002.html

AST-2019-002
Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-28447

[ASTERISK-28447] res_pjsip_messaging: In-dialog MESSAGE with no body causes crash - Digium/Asterisk JIRA
Vendor Advisory

Products affected by CVE-2019-12827