openEuler 20.03 LTS update for cpio



Published: 2020-12-04
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2016-2037
CVE-2019-14866
CWE-ID CWE-119
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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openEuler
Operating systems & Components / Operating system

cpio-help
Operating systems & Components / Operating system package or component

cpio-debugsource
Operating systems & Components / Operating system package or component

cpio-debuginfo
Operating systems & Components / Operating system package or component

cpio
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU33162

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2037

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The cpio_safer_name_suffix function in util.c in cpio 2.11 allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted cpio file.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

cpio-help: before 2.13-2

cpio-debugsource: before 2.13-2

cpio-debuginfo: before 2.13-2

cpio: before 2.13-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1071


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) Input validation error

EUVDB-ID: #VU22598

Risk: Low

CVSSv3.1: 2.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14866

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to GNU cpio does not properly validate files when writing tar headers during tar archive creation. A local user can trick the victim into creating a tar archive out of a directory with specially crafted files. As a result the generated archive may contain files that the attacker does not have access to.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

cpio-help: before 2.13-2

cpio-debugsource: before 2.13-2

cpio-debuginfo: before 2.13-2

cpio: before 2.13-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1071


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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