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Vulnerability record · CVE-2013-3587 · published 21 February 2020

CVE-2013-3587: F5 big-ip access policy manager information exposure vulnerability

F5 · Big Ip Access Policy Manager

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.

5.9 CVSS 3.1 Medium EPSS 6.0% · top 6.9% CWE-200 · Information exposure
5.9CVSS 3.1 base score, v2 4.3
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
24References, 4 tagged exploit
16 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://breachattack.com/ Third Party Advisory
http://github.com/meldium/breach-mitigation-rails Third Party Advisory
http://security.stackexchange.com/questions/20406/is-http-compression-safe#20407 ExploitThird Party Advisory
http://slashdot.org/story/13/08/05/233216 Third Party Advisory
http://www.iacr.org/cryptodb/archive/2002/FSE/3091/3091.pdf Third Party Advisory
http://www.kb.cert.org/vuls/id/987798 Third Party AdvisoryUS Government Resource
https://bugzilla.redhat.com/show_bug.cgi?id=995168 Issue TrackingThird Party Advisory
https://hackerone.com/reports/254895 ExploitThird Party Advisory
https://lists.apache.org/thread.html/r7f0e9cfd166934172d43ca4c272b8bdda4a343036229d9937affd1e1%40%3Cdev.httpd.apache.org
https://support.f5.com/csp/article/K14634 Third Party Advisory
https://www.blackhat.com/us-13/briefings.html#Prado Third Party Advisory
https://www.djangoproject.com/weblog/2013/aug/06/breach-and-django/ Third Party Advisory
http://breachattack.com/ Third Party Advisory
http://github.com/meldium/breach-mitigation-rails Third Party Advisory
http://security.stackexchange.com/questions/20406/is-http-compression-safe#20407 ExploitThird Party Advisory
http://slashdot.org/story/13/08/05/233216 Third Party Advisory
http://www.iacr.org/cryptodb/archive/2002/FSE/3091/3091.pdf Third Party Advisory
http://www.kb.cert.org/vuls/id/987798 Third Party AdvisoryUS Government Resource
https://bugzilla.redhat.com/show_bug.cgi?id=995168 Issue TrackingThird Party Advisory
https://hackerone.com/reports/254895 ExploitThird Party Advisory
https://lists.apache.org/thread.html/r7f0e9cfd166934172d43ca4c272b8bdda4a343036229d9937affd1e1%40%3Cdev.httpd.apache.org
https://support.f5.com/csp/article/K14634 Third Party Advisory
https://www.blackhat.com/us-13/briefings.html#Prado Third Party Advisory
https://www.djangoproject.com/weblog/2013/aug/06/breach-and-django/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2013-3587), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.