Known exploited vulnerability
CVE-2017-11882
The short answer
CVE-2017-11882 affects Microsoft Corporation Microsoft Office and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
Microsoft Office 2007 Service Pack 3, Microsoft Office 2010 Service Pack 2, Microsoft Office 2013 Service Pack 1, and Microsoft Office 2016 allow an attacker to run arbitrary code in the context of the current user by failing to properly handle objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11884.
Weakness: CWE-119.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Microsoft Office. NVD's record lists the exact affected versions.
References
- 0patch.blogspot.com/2017/11/did-microsoft-just-manually-patch-their.html ExploitThird Party Advisory
- 0patch.blogspot.com/2017/11/official-patch-for-cve-2017-11882-meets.html ExploitPatchThird Party Advisory
- github.com/0x09AL/CVE-2017-11882-metasploit ExploitThird Party Advisory
- github.com/embedi/CVE-2017-11882 ExploitThird Party Advisory
- github.com/rxwx/CVE-2017-11882 ExploitThird Party Advisory
- github.com/unamer/CVE-2017-11882 ExploitThird Party Advisory
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11882 PatchVendor Advisory
- researchcenter.paloaltonetworks.com/2017/12/unit42-analysis-of-cve-2017-11882-exploit-in-the-wild/ ExploitThird Party Advisory
- web.archive.org/web/20181104111128/https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about/ ExploitMitigationThird Party Advisory
- www.exploit-db.com/exploits/43163/ ExploitThird Party AdvisoryVDB Entry
- www.kb.cert.org/vuls/id/421280 Third Party AdvisoryUS Government Resource
- 0patch.blogspot.com/2017/11/did-microsoft-just-manually-patch-their.html ExploitThird Party Advisory
Questions
Is CVE-2017-11882 being exploited?
Yes. CISA added CVE-2017-11882 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2017-11882?
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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