Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2013-4235 |
CWE-ID | CWE-367 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system uidmap (Ubuntu package) Operating systems & Components / Operating system package or component libsubid4 (Ubuntu package) Operating systems & Components / Operating system package or component login (Ubuntu package) Operating systems & Components / Operating system package or component passwd (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU59131
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2013-4235
CWE-ID:
CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Exploit availability: No
DescriptionThe vulnerability allows a local user to delete or modify arbitrary files on the system.
The vulnerability exists due to a race condition in shadow-utils when executing usermod/userdel operations. A local user with write access to the directory that is being moved or deleted by the usermod/userdel commands can modify or delete arbitrary files on the system.
Successful exploitation of the vulnerability may allow an attacker to corrupt arbitrary files on the system and perform a denial of service (DoS) attack.
Update the affected package shadow to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 22.10
uidmap (Ubuntu package): before Ubuntu Pro (Infra-only)
libsubid4 (Ubuntu package): before 1:4.11.1+dfsg1-2ubuntu1.1
login (Ubuntu package): before Ubuntu Pro (Infra-only)
passwd (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5745-1
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.