Known exploited vulnerability
CVE-2015-4852
The short answer
CVE-2015-4852 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic to TCP port 7001, related to oracle_common/modules/com.bea.core.apache.commons.collections.jar. NOTE: the scope of this CVE is limited to the WebLogic Server product.
Weakness: CWE-502.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
95%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- blogs.oracle.com/security/entry/security_alert_cve_2015_4852 Broken Link
- github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py Product
- www.exploit-db.com/exploits/42806/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/46628/ ExploitThird Party AdvisoryVDB Entry
- blogs.oracle.com/security/entry/security_alert_cve_2015_4852 Broken Link
- github.com/foxglovesec/JavaUnserializeExploits/blob/master/weblogic.py Product
- www.exploit-db.com/exploits/42806/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/46628/ ExploitThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-4852 US Government Resource
Questions
Is CVE-2015-4852 being exploited?
Yes. CISA added CVE-2015-4852 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.
How do I fix CVE-2015-4852?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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