libsixel 1.8.2 status.c sixel_helper_set_additional_message null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in libsixel 1.8.2. It has been declared as problematic. Affected by this vulnerability is the function sixel_helper_set_additional_message of the file status.c. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2018-19757. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in libsixel 1.8.2 and classified as problematic. This vulnerability affects the function sixel_helper_set_additional_message of the file status.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

There is a NULL pointer dereference at function sixel_helper_set_additional_message (status.c) in libsixel 1.8.2 that will cause a denial of service.

The bug was discovered 11/13/2018. The weakness was released 11/30/2018 (Website). The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2018-19757 since 11/29/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $0-$5k.

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

Entries connected to this vulnerability are available at VDB-127340, VDB-127338 and VDB-127335. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

License

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

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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

11/13/2018 🔍
11/29/2018 +16 days 🔍
11/29/2018 +0 days 🔍
11/30/2018 +1 days 🔍
11/30/2018 +0 days 🔍
04/16/2020 +503 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2018-19757 (🔍)
GCVE (CVE): GCVE-0-2018-19757
GCVE (VulDB): GCVE-100-127336
See also: 🔍

Entryinfo

Created: 11/30/2018 15:26
Updated: 04/16/2020 12:40
Changes: 11/30/2018 15:26 (57), 04/16/2020 12:40 (1)
Complete: 🔍
Cache ID: 216::103

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

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