Deserialization of Untrusted Data in drupal7 (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1000888
CWE-ID CWE-502
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 drupal7 (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) Deserialization of Untrusted Data

EUVDB-ID: #VU17066

Risk: Medium

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

CVE-ID: CVE-2018-1000888

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

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

The vulnerability exists due to insecure input validation when processing serialized data within tar files. A remote attacker can create a tar file with `phar://[path_to_malicious_phar_file]` as path  and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

drupal7 (Alpine package): 7.59-r0 - 7.61-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=c424719f232a15cfc8f49cc56680e79bc3b64471
https://git.alpinelinux.org/aports/commit/?id=87800be0f5a83903722d252e180638f2cd41913b
https://git.alpinelinux.org/aports/commit/?id=9778b68435c4a757140400341651d4f4e1ddd666
https://git.alpinelinux.org/aports/commit/?id=c478891017b4357ee3eae7389efe74f53551f5a4


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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