Open Redirect in Apache HTTP Server
CVE-2020-1927
In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.567 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.567 · newest: 0.567 · change: 0.000
Affected products
- Apache HTTP Server — versions 2.4.0 to 2.4.41
- Apache HTTP Server
- Broadcom Brocade Fabric Operating System
- NetApp Oncommand Unified Manager Core Package
- Oracle Communications Element Manager — versions 8.1.1, 8.2.0, 8.2.1
- Oracle Communications Session Report Manager — versions 8.1.1, 8.2.0, 8.2.1
- Oracle Communications Session Route Manager — versions 8.1.1, 8.2.0, 8.2.1
- Oracle Enterprise Manager Ops Center — versions 12.4.0.0
- Oracle Instantis Enterprisetrack
- Oracle Sd-Wan Aware — versions 8.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2020/04/03/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/04/04/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/r52a52fd60a258f5999a8fa5424b30d9fd795885f9ff4828d8… (mailing-list)
- lists.apache.org/thread.html/r1719675306dfbeaceff3dc63ccad3de2d5615919ca3c13276… (mailing-list)
- lists.apache.org/thread.html/r70ba652b79ba224b2cbc0a183078b3a49df783b419903e3dc… (mailing-list)
- lists.apache.org/thread.html/r10b853ea87dd150b0e76fda3f8254dfdb23dd05fa55596405… (mailing-list)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2020.html (Patch, Third Party Advisory)
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- security.netapp.com/advisory/ntap-20200413-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1927?
- CVE-2020-1927 is a medium-severity vulnerability in Apache HTTP Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-04-02.
- How severe is CVE-2020-1927?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-1927 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.