Input validation error in gnupg1 (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-1607
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 gnupg1 (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU30594

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-1607

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts, which allows remote attackers to cause a denial of service (invalid read operation) via a crafted keyring file, related to sign extensions and "memcpy with overlapping ranges."

Mitigation

Install update from vendor's website.

Vulnerable software versions

gnupg1 (Alpine package): 1.4.17-r0 - 1.4.18-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=332d853b24780ff51a7b2c31421336c4ba2d849f
https://git.alpinelinux.org/aports/commit/?id=260ed10e0c65baf73df65d96a63ad1b62b42e91c
https://git.alpinelinux.org/aports/commit/?id=17a96534e9109383fc8407ca03b82f7344bd960f
https://git.alpinelinux.org/aports/commit/?id=7991b613b03b2288f7c2521d0630dfdea232ba39


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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