Multiple vulnerabilities in Linux kernel



| Updated: 2020-07-14
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2015-1838
CVE-2000-1134
CWE-ID CWE-19
CWE-61
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1)

EUVDB-ID: #VU28385

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-1838

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

The vulnerability allows a local authenticated user to read and manipulate data.

modules/serverdensity_device.py in SaltStack before 2014.7.4 does not properly handle files in /tmp.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4 - 4.14.84

CPE2.3 External links

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.85
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.166
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.142


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.

2) Symlink attack

EUVDB-ID: #VU28390

Risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2000-1134

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

Exploit availability: No

Description

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

Multiple shell programs on various Unix systems, including (1) tcsh, (2) csh, (3) sh, and (4) bash, follow symlinks when processing << redirects (aka here-documents or in-here documents), which allows local users to overwrite files of other users via a symlink attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4 - 4.14.84

CPE2.3
External links

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.85
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.166
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.142


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.



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