Linux Kernel up to 5.3.9 audit.c aa_label_parse use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$5k-$25k0.00

A vulnerability has been found in Linux Kernel up to 5.3.9 (Operating System) and classified as critical. This vulnerability affects the function aa_label_parse of the file security/apparmor/audit.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in the Linux kernel through 5.3.9. There is a use-after-free when aa_label_parse() fails in aa_audit_rule_init() in security/apparmor/audit.c.

The weakness was presented 11/07/2019. This vulnerability was named CVE-2019-18814 since 11/07/2019. 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. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/05/2024).

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

See VDB-145227, VDB-145226, VDB-145225 and VDB-145224 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

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

11/07/2019 🔍
11/07/2019 +0 days 🔍
11/08/2019 +1 days 🔍
02/05/2024 +1550 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: K21561554
Status: Not defined

CVE: CVE-2019-18814 (🔍)
GCVE (CVE): GCVE-0-2019-18814
GCVE (VulDB): GCVE-100-145228
See also: 🔍

Entryinfo

Created: 11/08/2019 11:22 AM
Updated: 02/05/2024 03:44 PM
Changes: 11/08/2019 11:22 AM (38), 11/08/2019 11:27 AM (18), 02/05/2024 03:44 PM (4)
Complete: 🔍
Cache ID: 18:3BB:40

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