http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration
http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors.
- Published
- Oct 27, 2015
- Updated
- Jun 16, 2026
- EPSS
- 18.8% · 97th percentile
- CWE
- CWE-399
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Report tools
Action score
23
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 6 / 30 · 18.8%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| apache | httpclient | cpe:2.3:a:apache:httpclient |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apache httpclient4.3 and later · up to 4.3.5 inclusive
- canonical ubuntu linux12.04
- canonical ubuntu linux14.04
- canonical ubuntu linux15.04
- fedoraproject fedora21
- fedoraproject fedora22
- fedoraproject fedora23
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | commons-httpclient | before 3.1-12 | 3.1-12 |
| Debian:12 | httpcomponents-client | before 4.3.6-1 | 4.3.6-1 |
| Debian:6.0 | commons-httpclient | before 3.1-9+deb6u2 | 3.1-9+deb6u2 |
| Maven | org.apache.httpcomponents:httpclient | before 4.3.6 | 4.3.6 |
| openSUSE:Leap 15.1 | apache-commons-httpclient | before 3.1-lp151.4.3.1 | 3.1-lp151.4.3.1 |
| openSUSE:Leap 15.2 | apache-commons-httpclient | before 3.1-lp152.6.3.1 | 3.1-lp152.6.3.1 |
| openSUSE:Tumbleweed | apache-commons-httpclient | before 3.1-13.4 | 3.1-13.4 |
| SUSE:HPE Helion OpenStack 8 | apache-commons-httpclient | before 3.1-6.3.1 | 3.1-6.3.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP1 | apache-commons-httpclient | before 3.1-4.3.2 | 3.1-4.3.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP2 | apache-commons-httpclient | before 3.1-11.3.2 | 3.1-11.3.2 |
Same product
apache: all recordsOther highest-scoring records for the same primary product.
- CVE-2013-4366http/impl/client/HttpClientBuilder.java in Apache HttpClient 4.3.x before 4.3.1 does not ensure that X509HostnameVerifier is not null, which40Plan
- CVE-2026-71290Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)36Monitor
- CVE-2025-27820Apache HttpComponents: PSL (Public Suffix List) validation bypass30Monitor
- CVE-2026-40542Apache HttpClient: SCRAM-SHA-256 mutual authentication bypass may cause the client to accept authentication without proper mutual authentication verification29Monitor
- CVE-2014-3577org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and HttpAsyncClient before 4.0.2 does not properl26Monitor
- CVE-2012-5783Apache Commons HttpClient 3.x, as used in Amazon Flexible Payments Service (FPS) merchant Java SDK and other products, does not verify that 26Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:commons-httpclient | 3.1-12 · Debian:12 | Package registry (OSV) |
| debian:httpcomponents-client | 4.3.6-1 · Debian:12 | Package registry (OSV) |
| Maven:org.apache.httpcomponents:httpclient | 4.3.6 | Package registry (OSV) |
| opensuse:apache-commons-httpclient | 3.1-lp151.4.3.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| suse:apache-commons-httpclient | 3.1-6.3.1 · SUSE:HPE Helion OpenStack 8 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-21-0701 · Sep 3, 2021(IBM Güvenlik Bülteni Yayınladı)
- TR-21-0435 · Jun 2, 2021(IBM Güvenlik Bülteni Yayınladı)
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.fedoraproject.org/pipermail/package-announce/2015-October/167962.html
- lists.fedoraproject.org/pipermail/package-announce/2015-October/167999.html
- lists.fedoraproject.org/pipermail/package-announce/2015-October/168030.html
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00032.html
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00033.html
- svn.apache.org/viewvc?view=revision&revision=1626784
- www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- www.securitytracker.com/id/1033743
- www.ubuntu.com/usn/USN-2769-1
- bugzilla.redhat.com/show_bug.cgi?id=1261538
- issues.apache.org/jira/browse/HTTPCLIENT-1478
- jenkins.io/security/advisory/2018-02-26/
- lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
- lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
- lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
Vendor advisories and official records. Exploit/PoC links are deliberately left out.