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CVE-2023-3247

Missing error check and insufficient random bytes in HTTP Digest authentication for SOAP

Low2.6EPSS 0.71%
Published
Updated
Reserved
Assigned by
php

Description

In PHP versions 8.0.* before 8.0.29, 8.1.* before 8.1.20, 8.2.* before 8.2.7 when using SOAP HTTP Digest Authentication, random value generator was not checked for failure, and was using narrower range of values than it should have. In case of random generator failure, it could lead to a disclosure of 31 bits of uninitialized memory from the client to the server, and it also made easier to a malicious server to guess the client's nonce.

Scores

CVSS scores of CVE-2023-3247, by who scored it
Scored byCVSSScoreVector
phpCNA (assigner)3.1Low2.6CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
NVDNVD · Modified3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS (exploitation in 30 days)
0.71% · top 46% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.

Weakness

Affected products

  • PHP Group · PHP

    • affected 8.0.* – < 8.0.29
    • affected 8.1.* – < 8.1.20
    • affected 8.2.* – < 8.2.7

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .