OESA-2021-1235

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1235

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2021-1235.json

JSON Data

https://api.test.osv.dev/v1/vulns/OESA-2021-1235

Upstream

CVE-2021-31535

Published

2021-06-22T11:02:59Z

Modified

2025-08-12T05:08:10.073455Z

Summary

libX11 security update

Details

Core X11 protocol client library.

Security Fix(es):

LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely. For example, if the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.(CVE-2021-31535)

Database specific

{
    "severity": "Critical"
}

References

Affected packages

openEuler:20.03-LTS-SP1 / libX11

Package

Name: libX11
Purl: pkg:rpm/openEuler/libX11&distro=openEuler-20.03-LTS-SP1

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.6.9-5.oe1

Ecosystem specific

{
    "noarch": [
        "libX11-help-1.6.9-5.oe1.noarch.rpm"
    ],
    "src": [
        "libX11-1.6.9-5.oe1.src.rpm"
    ],
    "x86_64": [
        "libX11-devel-1.6.9-5.oe1.x86_64.rpm",
        "libX11-debugsource-1.6.9-5.oe1.x86_64.rpm",
        "libX11-1.6.9-5.oe1.x86_64.rpm",
        "libX11-debuginfo-1.6.9-5.oe1.x86_64.rpm"
    ],
    "aarch64": [
        "libX11-debuginfo-1.6.9-5.oe1.aarch64.rpm",
        "libX11-devel-1.6.9-5.oe1.aarch64.rpm",
        "libX11-debugsource-1.6.9-5.oe1.aarch64.rpm",
        "libX11-1.6.9-5.oe1.aarch64.rpm"
    ]
}