CVE-2020-9588 Magento Signature verification bypass

What is CVE-2020-9588?

CVE-2020-9588 is a high-severity vulnerability in Magento Magento, published on 26 Jun 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.

Weakness: CWE-203

Which versions are affected by CVE-2020-9588?

7 open source packages ship an affected version, including magento/community-edition, magento and magento/core. It affects 1 product.

Products include Magento Magento.

How do I fix CVE-2020-9588?

Upgrade magento/community-edition to 2.3.4-p2 or later.

Is CVE-2020-9588 being exploited?

There is no known exploitation of CVE-2020-9588 in the wild and no public exploit code.

Other vulnerabilities in Magento Magento

• CVE-2020-9664 Magento php object injection vulnerability Critical 9.8
• CVE-2020-9576 Magento command injection vulnerability Critical 9.8
• CVE-2020-9578 Magento command injection vulnerability Critical 9.8
• CVE-2020-9579 Magento Security mitigation bypass vulnerability Critical 9.8
• CVE-2020-9580 Magento Security mitigation bypass vulnerability Critical 9.8

All Magento Magento vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-magento-2020-9588, GHSA-j2r4-2cr6-h3r3.