libav 12.3 Subtitle Decoder libavcodec/srtdec.c srt_to_ass Video File buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability classified as critical was found in libav 12.3 (Multimedia Player Software). This vulnerability affects the function srt_to_ass of the file libavcodec/srtdec.c of the component Subtitle Decoder. The manipulation as part of a Video File leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A stack-based buffer overflow in the subtitle decoder in Libav 12.3 allows attackers to corrupt the stack via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c misuses snprintf.

The weakness was disclosed 09/19/2019. This vulnerability was named CVE-2019-9719 since 03/12/2019. 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.

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

The entry 142011 is pretty similar.

Productinfo

Type

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
ATT&CK: Unknown

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

03/12/2019 🔍
09/19/2019 +191 days 🔍
09/20/2019 +1 days 🔍
08/31/2020 +346 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2019-9719 (🔍)
See also: 🔍

Entryinfo

Created: 09/20/2019 10:54 AM
Updated: 08/31/2020 12:45 PM
Changes: 09/20/2019 10:54 AM (38), 08/31/2020 12:45 PM (18)
Complete: 🔍

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