Sangoma Asterisk 13.21-cert4/15.7.3/16.5.0 Invite res_pjsip_t38 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Sangoma Asterisk 13.21-cert4/15.7.3/16.5.0. It has been rated as problematic. Affected by this vulnerability is the function res_pjsip_t38 of the component Invite Handler. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2019-15297. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Sangoma Asterisk 13.21-cert4/15.7.3/16.5.0 (Communications System) and classified as problematic. This issue affects the function res_pjsip_t38 of the component Invite Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

res_pjsip_t38 in Sangoma Asterisk 13.21-cert4, 15.7.3, and 16.5.0 allows an attacker to trigger a crash by sending a declined stream in a response to a T.38 re-invite initiated by Asterisk.

The weakness was shared 09/09/2019 (Website). The advisory is shared at downloads.asterisk.org. The identification of this vulnerability is CVE-2019-15297 since 08/21/2019. The exploitation is known to be easy. The attack may be initiated remotely. The successful exploitation requires a simple authentication. Technical details are known, 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.

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

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/21/2019 🔍
09/09/2019 +19 days 🔍
09/10/2019 +1 days 🔍
12/18/2023 +1560 days 🔍

Sourcesinfo

Advisory: 154371
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-15297 (🔍)
GCVE (CVE): GCVE-0-2019-15297
GCVE (VulDB): GCVE-100-141449

Entryinfo

Created: 09/10/2019 09:54
Updated: 12/18/2023 10:53
Changes: 09/10/2019 09:54 (56), 08/17/2020 11:43 (1), 12/18/2023 10:53 (3)
Complete: 🔍
Cache ID: 216::103

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

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