Privilege escalation in E2fsprogs



Published: 2019-09-25
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-5094
CWE-ID CWE-787
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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E2fsprogs
Universal components / Libraries / Libraries used by multiple products

Vendor e2fsprogs.sourceforge.net

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU21329

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-5094

CWE-ID: CWE-787 - Out-of-bounds Write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the quota file functionality. A local user can send a specially crafted xt4 partition, trigger out-of-bounds write on the heap and execute arbitrary code on the target system.

Note: An attacker can corrupt a partition to trigger this vulnerability.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

E2fsprogs: 1.43.3 - 1.45.3


CPE2.3 External links

http://talosintelligence.com/vulnerability_reports/TALOS-2019-0887

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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