Debian update for e2fsprogs



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
 e2fsprogs (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU21329

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

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

Update the affected package to version: 1.43.4-2+deb9u1, 1.44.5-1+deb10u2.

Vulnerable software versions

e2fsprogs (Debian package): 1.43.3-1~bpo8+1 - 1.44.6-1

CPE2.3 External links

https://www.debian.org/security/2019/dsa-4535


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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