BREACH attack against HTTP compression
Published Feb 21, 2020
5.9
MEDIUMCVSS 3.1
EPSS 6.05%
Description
The HTTPS protocol, as used in unspecified web applications, can encrypt compressed data without properly obfuscating the length of the unencrypted data, which makes it easier for man-in-the-middle attackers to obtain plaintext secret values by observing length differences during a series of guesses in which a string in an HTTP request URL potentially matches an unknown string in an HTTP response body, aka a "BREACH" attack, a different issue than CVE-2012-4929.
Affected products
No data.
Configuration 1
- ≥ 10.1.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 2
- ≥ 11.3.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 3
- ≥ 11.0.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 4
- ≥ 11.4.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 5
- ≥ 9.2.0 · ≤ 9.4.8
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 6
- ≥ 10.1.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.3.0
Configuration 7
- ≥ 9.2.2 · ≤ 9.4.8
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 8
- ≥ 9.0.0 · ≤ 9.6.1
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 9
- ≥ 11.3.0 · ≤ 11.6.1
- ≥ 12.0.0 · ≤ 12.1.2
- 13.0.0
Configuration 10
- ≥ 9.4.5 · ≤ 9.4.8
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.4.1
Configuration 11
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.3.0
Configuration 12
- ≥ 9.4.0 · ≤ 9.4.8
- ≥ 10.0.0 · ≤ 10.2.4
- ≥ 11.0.0 · ≤ 11.3.0
No data.
Red Hat Enterprise Linux 5
httpd
Will not fix
Red Hat Enterprise Linux 6
httpd
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | httpd | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | httpd | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue is not planned to be addressed in the version of httpd as shipped with Red Hat Enterprise Linux 5 and 6. More details and possible mitigations are mentioned in https://bugzilla.redhat.com/show_bug.cgi?id=995168#c5
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
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 1, 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 (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.05% (0.06049) | 93.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.05% (0.06049) | 92.42th | v5 (v2026.06.15) |
| Apr 10, 2026 | 28.14% (0.28141) | 96.49th | v4 (v2025.03.14) |
| Mar 4, 2026 | 31.43% (0.31428) | 96.68th | v4 (v2025.03.14) |
| Mar 1, 2026 | 30.03% (0.30027) | 96.58th | v4 (v2025.03.14) |
| Feb 19, 2026 | 31.43% (0.31428) | 96.66th | v4 (v2025.03.14) |
| Feb 4, 2026 | 25.30% (0.25301) | 96.05th | v4 (v2025.03.14) |
| Feb 1, 2026 | 20.11% (0.20107) | 95.36th | v4 (v2025.03.14) |
| Jan 4, 2026 | 25.30% (0.25301) | 96.01th | v4 (v2025.03.14) |
| Jan 1, 2026 | 20.11% (0.20107) | 95.34th | v4 (v2025.03.14) |
| Dec 4, 2025 | 25.30% (0.25301) | 95.98th | v4 (v2025.03.14) |
| Dec 3, 2025 | 20.11% (0.20107) | 95.30th | v4 (v2025.03.14) |
| Dec 1, 2025 | 25.53% (0.25530) | 96.04th | v4 (v2025.03.14) |
| Nov 20, 2025 | 31.46% (0.31462) | 96.54th | v4 (v2025.03.14) |
| Nov 18, 2025 | 25.30% (0.25301) | 95.85th | v4 (v2025.03.14) |
| Nov 4, 2025 | 16.75% (0.16753) | 94.66th | v4 (v2025.03.14) |
| Nov 1, 2025 | 12.32% (0.12322) | 93.62th | v4 (v2025.03.14) |
| Oct 20, 2025 | 17.05% (0.17053) | 94.67th | v4 (v2025.03.14) |
| Sep 1, 2025 | 14.24% (0.14238) | 94.18th | v4 (v2025.03.14) |
| Aug 6, 2025 | 16.07% (0.16073) | 94.51th | v4 (v2025.03.14) |
| Mar 31, 2025 | 14.66% (0.14659) | 93.91th | v4 (v2025.03.14) |
| Mar 30, 2025 | 13.34% (0.13339) | 93.56th | v4 (v2025.03.14) |
| Mar 29, 2025 | 21.55% (0.21551) | 93.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 13.34% (0.13339) | 93.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00334) | 72.07th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00334) | 70.42th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.33% (0.00334) | 67.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00296) | 64.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | 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 (15)
- http://breachattack.com/ x_refsource_MISCThird Party Advisory
- http://github.com/meldium/breach-mitigation-rails x_refsource_MISCThird Party Advisory
- http://security.stackexchange.com/questions/20406/is-http-compression-safe#20407 x_refsource_MISCExploitThird Party Advisory
- http://slashdot.org/story/13/08/05/233216 x_refsource_MISCThird Party Advisory
- http://www.iacr.org/cryptodb/archive/2002/FSE/3091/3091.pdf x_refsource_MISCThird Party Advisory
- http://www.kb.cert.org/vuls/id/987798 x_refsource_MISCThird Party AdvisoryUS Government Resource
- https://access.redhat.com/security/cve/CVE-2013-3587 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=995168 x_refsource_MISCIssue TrackingThird Party Advisory
- https://hackerone.com/reports/254895 x_refsource_MISCExploitThird Party Advisory
- https://lists.apache.org/thread.html/r7f0e9cfd166934172d43ca4c272b8bdda4a343036229d9937affd1e1%40%3Cdev.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2013-3587
- https://support.f5.com/csp/article/K14634 x_refsource_MISCThird Party Advisory
- https://www.blackhat.com/us-13/briefings.html#Prado x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2013-3587
- https://www.djangoproject.com/weblog/2013/aug/06/breach-and-django/ x_refsource_MISCThird Party Advisory
Change history (0)
No recorded changes yet.