Vulnerability Details : CVE-2016-7143
The m_authenticate function in modules/m_sasl.c in Charybdis before 3.5.3 allows remote attackers to spoof certificate fingerprints and consequently log in as another user via a crafted AUTHENTICATE parameter.
Vulnerability category: BypassGain privilege
Exploit prediction scoring system (EPSS) score for CVE-2016-7143
Probability of exploitation activity in the next 30 days: 1.11%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 83 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-7143
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
8.1
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
NIST |
CWE ids for CVE-2016-7143
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The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-7143
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https://github.com/charybdis-ircd/charybdis/commit/818a3fda944b26d4814132cee14cfda4ea4aa824
SASL: Disallow beginning : and space anywhere in AUTHENTICATE parameter · charybdis-ircd/charybdis@818a3fd · GitHubIssue Tracking;Patch
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http://www.openwall.com/lists/oss-security/2016/09/05/8
oss-security - Re: CVE ID request: certificate spoofing through crafted SASL message in inspircd, charybdisMailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2016/09/04/3
oss-security - CVE ID request: certificate spoofing through crafted SASL message in inspircd, charybdisMailing List;Third Party Advisory
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http://www.securityfocus.com/bid/92761
Charybdis CVE-2016-7143 SSL Certificate Spoofing Vulnerability
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https://github.com/charybdis-ircd/charybdis/blob/charybdis-3.5.3/NEWS.md
charybdis/NEWS.md at charybdis-3.5.3 · charybdis-ircd/charybdis · GitHubRelease Notes;Third Party Advisory
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http://www.debian.org/security/2016/dsa-3661
Debian -- Security Information -- DSA-3661-1 charybdisThird Party Advisory
Products affected by CVE-2016-7143
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:charybdis_project:charybdis:*:*:*:*:*:*:*:*