CVE-2015-7755 on CISA KEV

Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before

01What CISA says about this vulnerability

Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH…

02Required action — verbatim from CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

03Notes & references

• arstechnica.com — http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-d…
• www.wired.com — http://www.wired.com/2015/12/juniper-networks-hidden-backdoors-show-the-risk-of-…
• www.securitytracker.com — http://www.securitytracker.com/id/1034489
• www.kb.cert.org — http://www.kb.cert.org/vuls/id/640184
• forums.juniper.net — https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-…
• github.com — https://github.com/hdm/juniper-cve-2015-7755
• kb.juniper.net — http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713
• twitter.com — http://twitter.com/cryptoron/statuses/677900647560253442
• adamcaudill.com — https://adamcaudill.com/2015/12/17/much-ado-about-juniper/
• www.forbes.com — http://www.forbes.com/sites/thomasbrewster/2015/12/18/juniper-says-it-didnt-work…
• www.securityfocus.com — http://www.securityfocus.com/bid/79626

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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