Vulnerability Details : CVE-2016-10027
Race condition in the XMPP library in Smack before 4.1.9, when the SecurityMode.required TLS setting has been set, allows man-in-the-middle attackers to bypass TLS protections and trigger use of cleartext for client authentication by stripping the "starttls" feature from a server response.
Products affected by CVE-2016-10027
- cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
- cpe:2.3:a:igniterealtime:smack:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-10027
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-10027
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2016-10027
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-10027
-
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739
[SMACK-739] Smack starts SASL step without TLS in case STARTTLS is stripped even if SecurityMode.Required is used - IgniteRealtime JIRAIssue Tracking;Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2016/12/22/12
oss-security - Re: CVE Request: Smack: TLS SecurityMode.required not always enforced, leading to striptls attackMailing List;Patch;Third Party Advisory
-
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
Move TLS Required check at the end of connect() · igniterealtime/Smack@059ee99 · GitHubPatch;Third Party Advisory
-
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04
Move TLS Required check at the end of connect() · igniterealtime/Smack@a9d5cd4 · GitHubPatch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/
[SECURITY] Fedora 25 Update: smack-4.1.5-3.fc25 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
http://www.securityfocus.com/bid/95129
Ignite Realtime Smack CVE-2016-10027 Man in the Middle Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22
Smack Security Advisory 2016-11-22 - Blogs / Ignite Realtime Blogs - Ignite Realtime Community ForumsVendor Advisory
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