CVE-2017-18588
Improper Certificate Validation in security-framework
An issue was discovered in the security-framework crate before 0.1.12 for Rust. Hostname verification for certificates does not occur if ClientBuilder uses custom root certificates.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the security-framework crate before 0.1.12 for Rust. Hostname verification for certificates does not occur if ClientBuilder uses custom root certificates.
- Record
CVE-2017-18588- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the security-framework crate before 0.1.12 for Rust. Hostname verification for certificates does not occur if ClientBuilder uses custom root certificates.
- Record
CVE-2017-18588- Updated
- 2026-11-02
EUVDEUVD-2021-1782 No score
An issue was discovered in the security-framework crate before 0.1.12 for Rust. Hostname verification for certificates does not occur if ClientBuilder uses custom root certificates.
- Record
EUVD-2021-1782- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jqqr-c2r2-9cvr
Improper Certificate Validation in security-framework
If custom root certificates were registered with a ClientBuilder, the hostname of the target server would not be validated against its presented leaf certificate. This issue was fixed by properly configuring the trust evaluation logic to perform that check.
- Record
GHSA-jqqr-c2r2-9cvr- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
OSV
An issue was discovered in the security-framework crate before 0.1.12 for Rust. Hostname verification for certificates does not occur if ClientBuilder uses custom root certificates.
- Record
CVE-2017-18588- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-jqqr-c2r2-9cvr
Improper Certificate Validation in security-framework
If custom root certificates were registered with a ClientBuilder, the hostname of the target server would not be validated against its presented leaf certificate. This issue was fixed by properly configuring the trust evaluation logic to perform that check.
- Record
GHSA-jqqr-c2r2-9cvr- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
OSVRUSTSEC-2017-0003
Hostname verification skipped when custom root certs used
If custom root certificates were registered with a ClientBuilder, the
hostname of the target server would not be validated against its presented leaf
certificate.
This issue was fixed by properly configuring the trust evaluation logic to perform that check.
- Record
RUSTSEC-2017-0003- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
security-frameworkcrates.io |
before 0.1.12 | 0.1.12 |
security-frameworkcrates.io |
0.0.0-0 up to 0.1.12 | 0.1.12 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-18588 is a medium vulnerability (CVSS 5.3) in Security-framework Project Security-framework, published March 15, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. Fixed in security-framework 0.1.12.