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CVE-2021-3518

Use after free in N/a Libxml2

CVSS score

8.8

EPSS probability

%21.9

Risk score

1.9

Published

5 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

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Vulnerability description

DayBreach CVE AI Research

CVE-2021-3518 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2021-3518 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1n/alibxml2 View
2xmlsoftlibxml2 View
3debiandebian linux View
4redhatjboss core services View
5redhatenterprise linux View
6fedoraprojectfedora View
7fedoraprojectfedora View
8netappactive iq unified manager View
9netappclustered data ontap View
10netappclustered data ontap antivirus connector View
11netappmanageability software development kit View
12netappontap select deploy administration utility View
13netappsnapdrive View
14netapphci h410c firmware View
15netapphci h410c View
16oraclecommunications cloud native core network function cloud native environment View
17oracleenterprise manager base platform View
18oracleenterprise manager base platform View
19oracleenterprise manager ops center View
20oraclemysql workbench View
21oraclepeoplesoft enterprise peopletools View
22oraclereal user experience insight View
23oraclereal user experience insight View
Total affected vendors: 7|Products: 23

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
8.8CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HNVD
6.8CVSS V2—AV:N/AC:M/Au:N/C:P/I:P/A:PNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

3 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3518 is associated with the following CWEs:

CWE-416: Use After Free

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3518 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

FEDORA-2021-e3ed1ba38bvendor-advisory[debian-lts-announce] 20210510 [SECURITY] [DLA 2653-1] libxml2 security updatevendor-advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=1954242vendor-advisoryFEDORA-2021-b950000d2bvendor-advisory[bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8vendor-advisory[bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8vendor-advisoryGLSA-202107-05vendor-advisoryhttps://security.netapp.com/advisory/ntap-20210625-0002/vendor-advisory20210723 APPLE-SA-2021-07-21-5 watchOS 7.6vendor-advisory20210723 APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7vendor-advisory

CVSS Vector Radar Chart

8.8 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityHighAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)High
Availability (Erişilebilirlik)High

Yama doğrulandı

3 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

N
n/a logo
n/a
X
xmlsoft logo
xmlsoft
D
debian logo
debian
R
redhat logo
redhat
F
fedoraproject logo
fedoraproject
N
netapp logo
netapp

Weakness Type (CWE & CAPEC)

CWE-416

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