Security readout for executives and security teams
Plain-English summary
Some curl/libcurl versions could reuse an old TLS session after the client certificate changed. A server might then rely on the previous identity instead of checking the new certificate. This is a medium-risk authentication correctness flaw, mainly relevant where client certificates are used for access control.
Executive priority
Treat as a targeted medium-priority fix. It is not presented as actively exploited, but it can weaken certificate-based authentication in affected deployments. Prioritize systems where client certificates gate privileged or sensitive access.
Technical view
CVE-2017-7468 is a CWE-295 issue in curl/libcurl described for 7.52.0 through 7.53.1. libcurl could resume TLS sessions despite a changed client certificate, allowing server-side resume behavior to associate the connection with an earlier identity. CVSS v3.0 is 4.8 with high attack complexity and low confidentiality/integrity impact.
Likely exposure
Exposure is most likely in applications or automation using affected curl/libcurl with TLS client certificates and session resumption. Environments not using client certificates are less likely to be meaningfully exposed. The bundle has inconsistent affected-version metadata, so validate against the curl and distribution advisories.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. Abuse would depend on a specific client-certificate change scenario and server behavior during TLS session resumption. The CVSS vector marks attack complexity high.
Researcher notes
The bundle describes versions 7.52.0 through 7.53.1, while its affected entry lists curl 7.54.0. Treat that as incomplete or conflicting evidence and verify directly against curl and OS vendor advisories before closing findings.
Mitigation direction
- Inventory curl and libcurl versions in systems, containers, and embedded packages.
- Check curl and distribution advisories for the corrected package version.
- Prioritize upgrades where client certificates protect sensitive services.
- Confirm distro backports rather than relying only on upstream version strings.
- Review TLS client-certificate workflows that reuse connections or sessions.
Validation and detection
- Identify applications linked against libcurl, not only the curl CLI.
- Check whether affected hosts use TLS client certificates for authentication.
- Compare installed packages with vendor advisory status and changelog entries.
- Verify scanners account for distribution backported fixes.
- Document any version-range discrepancy found during validation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-295: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2017-7468 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N2.22.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.8MediumVector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7468CVE reference · x_refsource_CONFIRM
- GLSA-201709-14CVE reference · vendor-advisory, x_refsource_GENTOO
- https://curl.haxx.se/docs/adv_20170419.htmlCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Certificate Validation
Improper Certificate Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.