Is CVE-2021-3517 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 8%.

What products does CVE-2021-3517 affect?

Tracked products affected include PeopleSoft Enterprise PeopleTools. Check the version you run to see whether it is affected.

How do I fix CVE-2021-3517?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2021-3517

Q: What is CVE-2021-3517?

CVE-2021-3517 is a high-severity software vulnerability (Out-of-bounds write) with a CVSS score of 8.6. There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigge

HIGH severity · CVSS 8.6 · Out-of-bounds write

8.6CVSS HIGH

Summary

There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactLow

Integrity impactLow

Availability impactHigh

Exploit probability (EPSS)8%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected products we track (1)

PeopleSoft Enterprise PeopleTools

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1954232 ↗

CVE-2021-3517

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information