Is CVE-2017-7822 in the CISA KEV catalog?

No. CVE-2017-7822 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7822?

CVE-2017-7822 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2017-7822?

CVE-2017-7822 has an EPSS score of 1.42% (70th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7822?

Upgrade firefox on debian unstable to 56.0-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2017-7822

MEDIUM

5.3

CVSS v3

NVD

Description

The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NIST Special Publication 800-38D specification. This might allow for the authentication key to be determined in some instances. This vulnerability affects Firefox < 56.

How to fix

Remediation Available

firefoxDebian

Fixed in:56.0-1CVE-2017-7822

firefoxUbuntu

Fixed in:56.0+build6-0ubuntu0.14.04.1USN-3435-1

Fixed in:56.0+build6-0ubuntu0.16.04.1USN-3435-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

1.42%probability of exploitation in 30 days

70thpercentile

Moderate risk: more likely to be exploited than 70% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Third-Party Advisory2

Issue Tracking1

bugzilla.mozilla.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.