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CVE-2017-15423

20
FAUCET Score

CVE-2017-15423 describes an inappropriate implementation in BoringSSL SPAKE2 within Google Chrome prior to version 63.0.3239.84, allowing a remote attacker to leak low-order bits of SHA512(password) by inspecting protocol traffic. This vulnerability has a CVSS score of 5.3 (Medium), indicating a low impact on confidentiality with no integrity or availability impact, and can be exploited remotely with low attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog. Community discussion and media coverage are minimal, suggesting low attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 63.0.3239.84CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 54th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:63.0.3239.84-1.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2017-15423Low

chromium-browser: issue with spake implementation in boringssl

Dec 6, 2017

References

access.redhat.com / errata/RHSA-2017:3401
chromereleases.googleblog.com / 2017/12/stable-channel-update-for-desktop.html
crbug.com / 778101
security.gentoo.org / glsa/201801-03
debian.org / security/2017/dsa-4064