CVE-2015-8597
CVE-2015-8597 is a high-severity vulnerability in Bluecoat Proxysg with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.4)
- CVSS v2: 5.8
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Bluecoat Proxysg
- Published:
- Last modified:
Description
Open redirect vulnerability in Blue Coat ProxySG 6.5 before 6.5.8.8 and 6.6 and Advanced Secure Gateway (ASG) 6.6 might allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a base64-encoded URL in conjunction with a "clear text" one in a coaching page, as demonstrated by "http://www.%humbug-URL%.local/bluecoat-splash-API?%BASE64-URL%."
Frequently asked questions
- What is CVE-2015-8597?
- Open redirect vulnerability in Blue Coat ProxySG 6.5 before 6.5.8.8 and 6.6 and Advanced Secure Gateway (ASG) 6.6 might allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a base64-encoded URL in conjunction with a "clear text" one in a coaching page, as demonstrated by "http://www.%humbug-URL%.local/bluecoat-splash-API?%BASE64-URL%."
- How severe is CVE-2015-8597?
- CVE-2015-8597 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2015-8597 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-8597?
- CVE-2015-8597 primarily affects Bluecoat Proxysg. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2015-8597?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2015-8597 published?
- CVE-2015-8597 was published on 2016-01-08 and last updated on 2026-06-17.
References
- http://knowitsecure.se/2015/12/18/knowit-secure-sakrar-bluecoat/
- http://www.securitytracker.com/id/1034506
- https://bto.bluecoat.com/security-advisory/sa107
Affected products (2)
- cpe:2.3:a:bluecoat:proxysg:*:*:*:*:*:*:*:*
- cpe:2.3:a:bluecoat:advanced_secure_gateway:6.6:*:*:*:*:*:*:*
More vulnerabilities in Bluecoat Proxysg
- CVE-2011-5124 — Critical (CVSS 10.0): Stack-based buffer overflow in the BCAAA component before build 60258, as used by Blue Coat ProxySG 4.2.3 through 6.1…
- CVE-2010-5189 — Critical (CVSS 9.3): Blue Coat ProxySG before SGOS 4.3.4.1, 5.x before SGOS 5.4.5.1, 5.5 before SGOS 5.5.4.1, and 6.x before SGOS 6.1.1.1…
- CVE-2016-6594 — High (CVSS 7.5): Blue Coat Advanced Secure Gateway 6.6, CacheFlow 3.4, ProxySG 6.5 and 6.6 allows remote attackers to bypass blocked…
- CVE-2004-0079 — High (CVSS 7.5): The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause…
- CVE-2013-5959 — High (CVSS 7.1): Blue Coat ProxySG before 6.2.14.1, 6.3.x, 6.4.x, and 6.5 before 6.5.2 allows remote attackers to cause a denial of…
- CVE-2009-1211 — Medium (CVSS 5.8): Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote…