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CVE-2019-3855

Integer overflow in The Libssh2 Project

CVSS score

7.5

EPSS probability

%9.3

Risk score

0.7

Published

7 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

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Vulnerability description

DayBreach CVE AI Research

CVE-2019-3855 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2019-3855 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1The libssh2 Projectlibssh2 View
2libssh2libssh2 View
3fedoraprojectfedora View
4fedoraprojectfedora View
5fedoraprojectfedora View
6debiandebian linux View
7debiandebian linux View
8netappontap select deploy administration utility View
9redhatenterprise linux View
10redhatenterprise linux desktop View
11redhatenterprise linux server View
12redhatenterprise linux server aus View
13redhatenterprise linux server eus View
14redhatenterprise linux server tus View
15redhatenterprise linux workstation View
16opensuseleap View
17applexcode View
18oraclepeoplesoft enterprise peopletools View
19oraclepeoplesoft enterprise peopletools View
Total affected vendors: 9|Products: 19

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
9.3CVSS V2—AV:N/AC:M/Au:N/C:C/I:C/A:CNVD
8.8CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HNVD
7.5CVSS V30HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HNVD
7.5CVSS V3_0HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

4 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
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-2019-3855 is associated with the following CWEs:

CWE-190: Integer Overflow or WraparoundCWE-787: Out-of-bounds Write

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-2019-3855 weaknesses.

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

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

[oss-security] 20190318 [SECURITY ADVISORIES] libssh2vendor-advisory20190319 [slackware-security] libssh2 (SSA:2019-077-01)vendor-advisoryhttps://www.libssh2.org/CVE-2019-3855.htmlvendor-advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3855vendor-advisoryhttp://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlvendor-advisory107485vendor-advisoryFEDORA-2019-f31c14682fvendor-advisoryhttps://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767vendor-advisory[debian-lts-announce] 20190326 [SECURITY] [DLA 1730-1] libssh2 security updatevendor-advisoryhttps://security.netapp.com/advisory/ntap-20190327-0005/vendor-advisory

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityHighPrivilegesNoneUser Interact.RequiredConfidentialityHighIntegrityHighAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)High
Integrity (Bütünlük)High
Availability (Erişilebilirlik)High

Yama doğrulandı

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

TL
The libssh2 Project logo
The libssh2 Project
L
libssh2 logo
libssh2
F
fedoraproject logo
fedoraproject
D
debian logo
debian
N
netapp logo
netapp
R
redhat logo
redhat

Weakness Type (CWE & CAPEC)

CWE-190 CWE-787

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