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CVE-2018-11469

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0...

5.9 MediumFix available

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

2.86%Up 1.8 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.9

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
CVE-2018-11469
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
CVE-2018-11469
Updated
2026-11-02
EUVDEUVD-2018-3500 No score

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
EUVD-2018-3500
Updated
2026-11-03
GitHub AdvisoriesGHSA-2m5p-jq2g-4fw5 5.9

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0...

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
GHSA-2m5p-jq2g-4fw5
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 5.9

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
CVE-2018-11469
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2018-11469 5.9

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
DEBIAN-CVE-2018-11469
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 5 moreShow less
OSVRHSA-2019:1436 7.5

Red Hat Security Advisory: rh-haproxy18-haproxy security, bug fix, and enhancement update

Record
RHSA-2019:1436
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-11469 5.9

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Record
UBUNTU-CVE-2018-11469
CVSS 3.0
5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2024:10839-1 No score

haproxy-2.4.4+git0.acb1d0bea-1.2 on GA media

These are all security issues fixed in the haproxy-2.4.4+git0.acb1d0bea-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10839-1
Updated
2026-11-02
OSVSUSE-SU-2018:3249-1 No score

Security update for haproxy

This update for haproxy to version 1.8.14 fixes the following issues:

These security issues were fixed:

  • CVE-2018-14645: A flaw was discovered in the HPACK decoder what caused an out-of-bounds read in hpack_valid_idx() that resulted in a remote crash and denial of service (bsc#1108683)
  • CVE-2018-11469: Incorrect caching of responses to requests including an Authorization header allowed attackers to achieve information disclosure via an unauthenticated remote request (bsc#1094846).

These non-security issues were fixed:

  • Require apparmor-abstractions to reduce dependencies (bsc#1100787)
  • hpack: fix improper sign check on the header index value
  • cli: make sure the 'getsock' command is only called on connections
  • tools: fix set_net_port() / set_host_port() on IPv4
  • patterns: fix possible double free when reloading a pattern list
  • server: Crash when setting FQDN via CLI.
  • kqueue: Don't reset the changes number by accident.
  • snapshot: take the proxy's lock while dumping errors
  • http/threads: atomically increment the error snapshot ID
  • dns: check and link servers' resolvers right after config parsing
  • h2: fix risk of memory leak on malformated wrapped frames
  • session: fix reporting of handshake processing time in the logs
  • stream: use atomic increments for the request counter
  • thread: implement HA_ATOMIC_XADD()
  • ECC cert should work with TLS < v1.2 and openssl >= 1.1.1
  • dns/server: fix incomatibility between SRV resolution and server state file
  • hlua: Don't call RESET_SAFE_LJMP if SET_SAFE_LJMP returns 0.
  • thread: lua: Wrong SSL context initialization.
  • hlua: Make sure we drain the output buffer when done.
  • lua: reset lua transaction between http requests
  • mux_pt: dereference the connection with care in mux_pt_wake()
  • lua: Bad HTTP client request duration.
  • unix: provide a ->drain() function
  • Fix spelling error in configuration doc
  • cli/threads: protect some server commands against concurrent operations
  • cli/threads: protect all 'proxy' commands against concurrent updates
  • lua: socket timeouts are not applied
  • ssl: Use consistent naming for TLS protocols
  • dns: explain set server ... fqdn requires resolver
  • map: fix map_regm with backref
  • ssl: loading dh param from certifile causes unpredictable error.
  • ssl: fix missing error loading a keytype cert from a bundle.
  • ssl: empty connections reported as errors.
  • cli: make 'show fd' thread-safe
  • hathreads: implement a more flexible rendez-vous point
  • threads: fix the no-thread case after the change to the sync point
  • threads: add more consistency between certain variables in no-thread case
  • threads: fix the double CAS implementation for ARMv7
  • threads: Introduce double-width CAS on x86_64 and arm.
  • lua: possible CLOSE-WAIT state with '\n' headers

For additional changes please refer to the changelog.

Record
SUSE-SU-2018:3249-1
Updated
2026-11-02
OSVUSN-3663-1 No score

haproxy vulnerability

It was discovered that HAProxy incorrectly handled certain resquests. An attacker could possibly use this to expose sensitive information.

Record
USN-3663-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
haproxy
Debian:12
before 1.8.9-2
1.8.9-2
haproxy
Debian:13
before 1.8.9-2
1.8.9-2
haproxy
Debian:14
before 1.8.9-2
1.8.9-2
rh-haproxy18-haproxy
Red Hat:rhel_software_collections:3::el7
before 0:1.8.17-1.el7
0:1.8.17-1.el7
rh-haproxy18-haproxy-debuginfo
Red Hat:rhel_software_collections:3::el7
before 0:1.8.17-1.el7
0:1.8.17-1.el7
rh-haproxy18-haproxy-syspaths
Red Hat:rhel_software_collections:3::el7
before 0:1.8.17-1.el7
0:1.8.17-1.el7
haproxy
SUSE:Linux Enterprise High Availability Extension 15
before 1.8.14~git0.52e4d43b-3.3.2
1.8.14~git0.52e4d43b-3.3.2
haproxy
Ubuntu:18.04:LTS
before 1.8.8-1ubuntu0.1, plus listed versions
1.7.9-1ubuntu11.7.9-1ubuntu21.8.4-11.8.7-11.8.8-1
1.8.8-1ubuntu0.1
haproxy
openSUSE:Tumbleweed
before 2.4.4+git0.acb1d0bea-1.2
2.4.4+git0.acb1d0bea-1.2

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-11469 is a medium vulnerability (CVSS 5.9) in Haproxy, published May 25, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.86%, the 86th percentile. Fixed in haproxy 1.8.9-2.

References

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