mysql: client SSL certificate verification flaw
Published Nov 30, 2009
6.8
MEDIUMCVSS 2.0
EPSS 1.77%
Description
The vio_verify_callback function in viosslfactories.c in MySQL 5.0.x before 5.0.88 and 5.1.x before 5.1.41, when OpenSSL is used, accepts a value of zero for the depth of X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary SSL-based MySQL servers via a crafted certificate, as demonstrated by a certificate presented by a server linked against the yaSSL library.
Affected products
No data.
- ≤ 5.0.87
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.0.5.0.21
- 5.0.10
- 5.0.15
- 5.0.16
- 5.0.17
- 5.0.20
- 5.0.22.1.0.1
- 5.0.24
- 5.0.30
- 5.0.36
- 5.0.44
- 5.0.54
- 5.0.56
- 5.0.60
- 5.0.66
- 5.0.82
- 5.0.84
- 5.1.5
- 5.1.23
- 5.1.31
- 5.1.32
- 5.1.34
- 5.1.37
- 5.0.0
- 5.0.3
- 5.0.6
- 5.0.7
- 5.0.8
- 5.0.11
- 5.0.12
- 5.0.13
- 5.0.14
- 5.0.18
- 5.0.19
- 5.0.21
- 5.0.22
- 5.0.23
- 5.0.25
- 5.0.26
- 5.0.27
- 5.0.30
- 5.0.32
- 5.0.33
- 5.0.37
- 5.0.38
- 5.0.41
- 5.0.42
- 5.0.45
- 5.0.50
- 5.0.51
- 5.0.52
- 5.0.75
- 5.0.77
- 5.0.81
- 5.0.83
- 5.0.85
- 5.0.86
- 5.1
- 5.1.1
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.6
- 5.1.7
- 5.1.8
- 5.1.9
- 5.1.10
- 5.1.11
- 5.1.12
- 5.1.13
- 5.1.14
- 5.1.15
- 5.1.16
- 5.1.17
- 5.1.18
- 5.1.19
- 5.1.20
- 5.1.21
- 5.1.22
- 5.1.23
- 5.1.24
- 5.1.25
- 5.1.26
- 5.1.27
- 5.1.28
- 5.1.29
- 5.1.30
- 5.1.31
- 5.1.33
- 5.1.34
- 5.1.35
- 5.1.36
- 5.1.37
- 5.1.38
- 5.1.39
- 5.1.40
- 5.1.40
No data.
Red Hat Enterprise Linux 5
mysql-0:5.0.77-4.el5_4.2
Fixed · RHSA-2010:0109
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | mysql-0:5.0.77-4.el5_4.2 | Fixed | RHSA-2010:0109 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.77% (0.01766) | 77.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.77% (0.01766) | 75.09th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.58% (0.01585) | 79.91th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.71% (0.03705) | 79.66th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.58% (0.01585) | 80.35th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.52% (0.00517) | 77.53th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.52% (0.00517) | 76.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.52% (0.00517) | 73.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.54% (0.01537) | 74.00th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (16)
- http://bugs.mysql.com/47320 x_refsource_CONFIRM
- http://dev.mysql.com/doc/refman/5.0/en/news-5-0-88.html x_refsource_CONFIRM
- http://dev.mysql.com/doc/refman/5.1/en/news-5-1-41.html x_refsource_CONFIRM
- http://lists.mysql.com/commits/87446 mailing-listx_refsource_MLISTExploit
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=oss-security&m=125881733826437&w=2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2009/11/19/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2009/11/23/16 mailing-listx_refsource_MLIST
- http://www.redhat.com/support/errata/RHSA-2010-0109.html vendor-advisoryx_refsource_REDHAT
- http://www.vupen.com/english/advisories/2010/1107 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-4028 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=541233 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-4028
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10940 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8510 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-4028
Change history (0)
No recorded changes yet.