Gentoo update for Patch



Published: 2019-04-17 | Updated: 2019-04-19
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-1000156
CVE-2018-6951
CVE-2018-6952
CWE-ID CWE-20
CWE-476
CWE-415
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU11646

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1000156

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the EDITOR_PROGRAM invocation due to improper input validation. A remote attacker can send a specially crafted patch file and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages.
sys-devel/patch to version: 2.7.6-r3

Vulnerable software versions

Gentoo Linux: All versions

External links

http://security.gentoo.org/glsa/201904-17


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU11177

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6951

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the intuit_diff_type function due to NULL pointer dereference. A remote attacker can cause the service to crash.

Mitigation

Update the affected packages.
sys-devel/patch to version: 2.7.6-r3

Vulnerable software versions

Gentoo Linux: All versions

External links

http://security.gentoo.org/glsa/201904-17


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Double Free

EUVDB-ID: #VU18323

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6952

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing untrusted input within the another_hunk() function in pch.c. A remote attacker can create a specially crafted file, trick the victim into using in with the affected application, trigger a double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.
sys-devel/patch to version: 2.7.6-r3

Vulnerable software versions

Gentoo Linux: All versions

External links

http://security.gentoo.org/glsa/201904-17


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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