PT-2020-19477 · Apereo · Cryptacular

Published 2020-01-24 · Updated 2022-05-12 · CVE-2020-7226

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cryptacular version 1.2.3 Cryptacular versions prior to 1.2.4

Description The issue allows attackers to trigger excessive memory allocation during a decode operation. This is because the nonce array length associated with new byte may depend on untrusted input within the header of encoded data. The problem is specifically related to the CiphertextHeader.java in Cryptacular, which is used in Apereo CAS and other products.

Recommendations For Cryptacular version 1.2.3, update to version 1.2.4 or later to resolve the issue. For Cryptacular versions prior to 1.2.4, update to version 1.2.4 or later to resolve the issue. As a temporary workaround, consider restricting the input to the CiphertextHeader.java to prevent excessive memory allocation.

Exploit

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2020-7226

GHSA-X64G-4XX9-FH6X

RHSA-2020:2058

RHSA-2020:2059

RHSA-2020:2060

RHSA-2020:2511

RHSA-2020:2512

RHSA-2020:2513

Affected Products

Cryptacular

References · 38

• 🔥 https://github.com/vt-middleware/cryptacular/issues/52 · Exploit
• 🔥 https://github.com/vt-middleware/cryptacular/blob/master/src/main/java/org/cryptacular/CiphertextHeader.java#L153 · Exploit
• 🔥 https://github.com/vt-middleware/cryptacular/blob/fafccd07ab1214e3588a35afe3c361519129605f/src/main/java/org/cryptacular/CiphertextHeader.java#L153 · Exploit
• https://github.com/apereo/cas/commit/8810f2b6c71d73341d4dde6b09a18eb46cfd6d45 · Patch
• https://github.com/apereo/cas/commit/93b1c3e9d90e36a19d0fa0f6efb863c6f0235e75 · Patch
• https://github.com/apereo/cas/commit/a042808d6adbbf44753d52c55cac5f533e24101f · Patch
• https://github.com/apereo/cas/pull/4685 · Patch
• https://osv.dev/vulnerability/CVE-2020-7226 · Vendor Advisory
• https://oracle.com/security-alerts/cpuapr2022.html · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-7226 · Security Note
• https://oracle.com/security-alerts/cpuoct2021.html · Patch
• https://osv.dev/vulnerability/GHSA-x64g-4xx9-fh6x · Vendor Advisory
• https://github.com/vt-middleware/cryptacular/commit/311baf12252abf21947afd07bf0a0291ec3ec796 · Note
• https://github.com/vt-middleware/cryptacular · Note
• https://github.com/vt-middleware/cryptacular/commit/ec2fb65f2455c479376695e3d75d30c7f6884b3f · Note