Out-of-bounds read in curl.haxx.se cURL



Published: 2018-08-01 | Updated: 2020-08-03
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-8621
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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cURL
Client/Desktop applications / Other client software

Vendor curl.haxx.se

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU33020

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-8621

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The `curl_getdate` function in curl before version 7.51.0 is vulnerable to an out of bounds read if it receives an input with one digit short.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cURL: 7.1, 7.1.1, 7.2, 7.2.1, 7.3, 7.4, 7.4.1, 7.4.2, 7.5, 7.5.1, 7.5.2, 7.6, 7.6.1, 7.7, 7.7.1, 7.7.2, 7.7.3, 7.8, 7.8.1, 7.8.2, 7.9, 7.9.1, 7.9.2, 7.9.3, 7.9.4, 7.9.5, 7.9.6, 7.9.7, 7.9.8, 7.10, 7.10.1, 7.10.2, 7.10.3, 7.10.4, 7.10.5, 7.10.6, 7.10.7, 7.10.8, 7.11.0, 7.11.1, 7.11.2, 7.12, 7.12.0, 7.12.1, 7.12.2, 7.12.3, 7.13, 7.13.0, 7.13.1, 7.13.2, 7.14, 7.14.0, 7.14.1, 7.15, 7.15.0, 7.15.1, 7.15.2, 7.15.3, 7.15.4, 7.15.5, 7.16.0, 7.16.1, 7.16.2, 7.16.3, 7.16.4, 7.17, 7.17.0, 7.17.1, 7.18, 7.18.0, 7.18.1, 7.18.2, 7.19.0, 7.19.1, 7.19.2, 7.19.3, 7.19.4, 7.19.5, 7.19.6, 7.19.7, 7.20.0, 7.20.1, 7.21.0, 7.21.1, 7.21.2, 7.21.3, 7.21.4, 7.21.5, 7.21.6, 7.21.7, 7.22.0, 7.23.0, 7.23.1, 7.24.0, 7.25.0, 7.26.0, 7.27.0, 7.28.0, 7.28.1, 7.29.0, 7.30.0, 7.31.0, 7.32.0, 7.33.0, 7.34.0, 7.35.0, 7.36.0, 7.37.0, 7.37.1, 7.38.0, 7.39.0, 7.40.0, 7.41.0, 7.42.0, 7.42.1, 7.43.0, 7.44.0, 7.45.0, 7.46.0, 7.47.0, 7.47.1, 7.48.0, 7.49.0, 7.49.1, 7.50.0, 7.50.1, 7.50.2, 7.50.3

CPE2.3 External links

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/94101
http://www.securitytracker.com/id/1037192
http://access.redhat.com/errata/RHSA-2018:2486
http://access.redhat.com/errata/RHSA-2018:3558
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8621
http://curl.haxx.se/CVE-2016-8621.patch
http://curl.haxx.se/docs/adv_20161102G.html
http://security.gentoo.org/glsa/201701-47
http://www.tenable.com/security/tns-2016-21

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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