CVE-2016-3739
Description
The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 7.50.1-1 |
| debian | bullseye | fixed | 7.50.1-1 |
| debian | forky | fixed | 7.50.1-1 |
| debian | sid | fixed | 7.50.1-1 |
| debian | trixie | fixed | 7.50.1-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| haxx | curl | 7.21.0 | |
| haxx | curl | 7.21.1 | |
| haxx | curl | 7.21.2 | |
| haxx | curl | 7.21.3 | |
| haxx | curl | 7.21.4 | |
| haxx | curl | 7.21.5 | |
| haxx | curl | 7.21.6 | |
| haxx | curl | 7.21.7 | |
| haxx | curl | 7.22.0 | |
| haxx | curl | 7.23.0 | |
| haxx | curl | 7.23.1 | |
| haxx | curl | 7.24.0 | |
| haxx | curl | 7.25.0 | |
| haxx | curl | 7.26.0 | |
| haxx | curl | 7.27.0 | |
| haxx | curl | 7.28.0 | |
| haxx | curl | 7.28.1 | |
| haxx | curl | 7.29.0 | |
| haxx | curl | 7.30.0 | |
| haxx | curl | 7.31.0 | |
| haxx | curl | 7.32.0 | |
| haxx | curl | 7.33.0 | |
| haxx | curl | 7.34.0 | |
| haxx | curl | 7.35.0 | |
| haxx | curl | 7.36.0 | |
| haxx | curl | 7.38.0 | |
| haxx | curl | 7.39.0 | |
| haxx | curl | 7.40.0 | |
| haxx | curl | 7.41.0 | |
| haxx | curl | 7.42.0 | |
| haxx | curl | 7.42.1 | |
| haxx | curl | 7.43.0 | |
| haxx | curl | 7.44.0 | |
| haxx | curl | 7.45.0 | |
| haxx | curl | 7.46.0 | |
| haxx | curl | 7.47.0 | |
| haxx | curl | 7.48.0 | |
References
- http://www.openwall.com/lists/oss-security/2024/03/27/4
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- http://www.securityfocus.com/bid/90726
- http://www.securitytracker.com/id/1035907
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349
- https://curl.haxx.se/CVE-2016-3739.patch
- https://curl.haxx.se/changes.html#7_49_0
- https://curl.haxx.se/docs/adv_20160518.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
- https://security.gentoo.org/glsa/201701-47
- https://security-tracker.debian.org/tracker/CVE-2016-3739
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.