CVE-2015-3152: debian debian_linux Improper Certificate Validation
Vulnerability summary
CVE-2015-3152 is a medium (CVSS 5.9) Improper Certificate Validation vulnerability in debian debian_linux. EPSS estimates a 7.14% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 6Timeline
- 16-05-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Oracle MySQL before 5.7.3, Oracle MySQL Connector/C (aka libmysqlclient) before 6.1.3, and MariaDB before 5.5.44 use the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, aka a "BACKRONYM" attack.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
7.14%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
Increase +0.06 pp
From 7.08% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (mysqlblog.fivefarmers.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- enterprise_linux_desktop7.0
- enterprise_linux_eus7.1 | 7.2 | 7.3 | 7.4 | 7.5 | 7.6 | 7.7
- enterprise_linux_server7.0
- enterprise_linux_server_aus7.3 | 7.4 | 7.6 | 7.7
- enterprise_linux_server_tus7.3 | 7.6 | 7.7
Ubuntu4 products
- mariadb-10.0< 10.0.22-0ubuntu1
- mariadb-5.5< 5.5.44-1ubuntu0.14.04.1
- mysql-5.5All versions (No fix recorded)
- percona-server-5.6All versions (No fix recorded)
Oracle2 products
- mysql≤ 5.7.2
- mysql_connector\/c\+\+≤ 6.1.2
Debian1 product
- debian_linuxEOL8.0
Fedoraproject1 product
- fedoraEOL21 | 22
Mariadb1 product
- mariadb≥ 5.5.0, < 5.5.44 | ≥ 10.0.0, < 10.0.20
Php1 product
- php≥ 5.4.0, < 5.4.43 | ≥ 5.5.0, < 5.5.27 | ≥ 5.6.0, < 5.6.11
7 vendors · 16 products
References
20 links- packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.htmlX Refsource MISCThird Party AdvisoryVDB Entry
- mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/X Refsource CONFIRMThird Party AdvisoryREPORT
- github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390X Refsource CONFIRMPatchThird Party Advisory
- mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/X Refsource MISCExploitThird Party Advisory
Show all 20 references
- lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.htmlVendor AdvisoryX Refsource FEDORAMailing ListThird Party Advisory
- www.securityfocus.com/archive/1/535397/100/1100/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
- lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.htmlVendor AdvisoryX Refsource FEDORAMailing ListThird Party Advisory