Security restrictions bypass in lftp (Alpine package)



Published: 2018-08-02
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-10916
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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lftp (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU14187

Risk: Medium

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10916

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to improper sanitization of remote file names. A remote unauthenticated attacker can trick the victim into using reverse mirroring on an attacker controlled FTP server bypass security restrictions and remove all files in the current working directory of the victim's system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

lftp (Alpine package): 4.0.5-r0 - 4.8.3-r2

External links

http://git.alpinelinux.org/aports/commit/?id=f92c119961532c9fb3ec3d8f1209d4e117da1ed6
http://git.alpinelinux.org/aports/commit/?id=38a33ff329e3f72d78dcc0cbb89829196b05131c


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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