CVE-2015-7519
CVE-2015-7519 is a low-severity vulnerability in Phusionpassenger Phusion Passenger with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Low (CVSS 3.x base score 3.7)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Phusionpassenger Phusion Passenger
- Published:
- Last modified:
Description
agent/Core/Controller/SendRequest.cpp in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X_User header.
Frequently asked questions
- What is CVE-2015-7519?
- agent/Core/Controller/SendRequest.cpp in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X_User header.
- How severe is CVE-2015-7519?
- CVE-2015-7519 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2015-7519 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-7519?
- CVE-2015-7519 primarily affects Phusionpassenger Phusion Passenger. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2015-7519?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2015-7519 published?
- CVE-2015-7519 was published on 2016-01-08 and last updated on 2026-06-17.
References
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00024.html
- http://www.openwall.com/lists/oss-security/2015/12/07/1
- http://www.openwall.com/lists/oss-security/2015/12/07/2
- https://blog.phusion.nl/2015/12/07/cve-2015-7519/
- https://bugzilla.suse.com/show_bug.cgi?id=956281
- https://github.com/phusion/passenger/commit/ddb8ecc4ebf260e4967f57f271d4f5761abeac3e
- https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html
- https://puppet.com/security/cve/passenger-dec-2015-security-fixes
Affected products (28)
- cpe:2.3:a:phusionpassenger:phusion_passenger:*:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.13:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.14:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.15:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.16:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.17:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.18:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.19:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.20:*:*:*:*:*:*:*
- cpe:2.3:a:phusionpassenger:phusion_passenger:5.0.21:*:*:*:*:*:*:*
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