Integer overflow in python3 (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-20406
CWE-ID CWE-190
Exploitation vector Network
Public exploit N/A
Vulnerable software
 python3 (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) Integer overflow

EUVDB-ID: #VU18403

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-20406

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in modules/_pickle.c when processing a large LONG_BINPUT value during the "resize to twice the size" attempt. A remote attacker can supply overly large data, trigger integer overflow and exhaust all resources on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

python3 (Alpine package): 3.6.5-r0 - 3.6.6-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=47b45e6408f07c2789e3662d06f25e1c434a9d6a
https://git.alpinelinux.org/aports/commit/?id=66574119245fb529a95130df97be423d3f6218e8
https://git.alpinelinux.org/aports/commit/?id=9d48a71d9895becc1428522aee341f26034aa3ab


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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