A 15-12 months-aged security vulnerability has been disclosed in the PEAR PHP repository that could permit an attacker to have out a provide chain attack, together with getting unauthorized entry to publish rogue offers and execute arbitrary code.
“An attacker exploiting the 1st just one could choose over any developer account and publish malicious releases, even though the next bug would allow for the attacker to obtain persistent accessibility to the central PEAR server,” SonarSource vulnerability researcher Thomas Chauchefoin explained in a create-up released this 7 days.
PEAR, shorter for PHP Extension and Application Repository, is a framework and distribution method for reusable PHP parts.
One of the issues, released in a code commit built in March 2007 when the aspect was at first applied, relates to the use of the cryptographically insecure mt_rand() PHP function in the password reset operation that could let an attacker to “uncover a legitimate password reset token in significantly less than 50 attempts.”
Armed with this exploit, a negative actor could target present developer or administrator accounts to hijack them and publish new trojanized versions of offers currently managed by the builders, resulting in a common supply chain compromise.
The second vulnerability, which demands the adversary to chain it with the aforementioned flaw to achieve preliminary obtain, stems from pearweb’s reliance on an more mature variation of Archive_Tar, which is inclined to a high-severity directory traversal bug (CVE-2020-36193, CVSS score: 7.5), leading to arbitrary code execution.
The conclusions mark the 2nd time security issues have been uncovered in the PHP offer chain in fewer than a 12 months. In late April 2021, critical vulnerabilities were being divulged in the Composer PHP bundle supervisor that could allow an adversary to execute arbitrary instructions.
With computer software provide chain attacks rising as a unsafe menace in the wake of protestware incidents aimed at greatly-utilised libraries in the NPM ecosystem, security issues tied to code dependencies in application are again in the highlight, prompting the Open Source Initiative to get in touch with the “weaponization of open up supply” an act of cyber vandalism that “outweigh[s] any achievable advantage.”
“These vulnerabilities have been present for much more than a decade and have been trivial to establish and exploit, increasing issues about the lack of security contributions from corporations relying on it,” Chauchefoin explained.
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