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CVE-2018-7225

Status Candidate

Overview

An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

Related Files

Ubuntu Security Notice USN-4573-1
Posted Oct 7, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4573-1 - Nicolas Ruff discovered that Vino incorrectly handled large ClientCutText messages. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. It was discovered that Vino incorrectly handled certain packet lengths. A remote attacker could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2014-6053, CVE-2018-7225, CVE-2019-15681, CVE-2020-14397, CVE-2020-14402, CVE-2020-14403, CVE-2020-14404
MD5 | b820dbcb8494dae534a235f1446d17cb
Ubuntu Security Notice USN-4547-1
Posted Sep 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4547-1 - It was discovered that an information disclosure vulnerability existed in the LibVNCServer vendored in iTALC when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. It was discovered that the LibVNCServer and LibVNCClient vendored in iTALC incorrectly handled certain packet lengths. A remote attacker could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, info disclosure
systems | linux, ubuntu
advisories | CVE-2018-15127, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024, CVE-2018-20749, CVE-2018-7225, CVE-2019-15681
MD5 | 9922e4b06254766557616cfff60d0f5a
Gentoo Linux Security Advisory 201908-05
Posted Aug 9, 2019
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201908-5 - Multiple vulnerabilities have been found in LibVNCServer, the worst of which could result in the arbitrary execution of code. Versions less than 0.9.12 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024, CVE-2018-7225, CVE-2018-7226
MD5 | 34625c253ad49372c4d4dd4b9a0493fe
Debian Security Advisory 4221-1
Posted Jun 8, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4221-1 - Alexander Peslyak discovered that insufficient input sanitising of RFB packets in LibVNCServer could result in the disclosure of memory contents.

tags | advisory
systems | linux, debian
advisories | CVE-2018-7225
MD5 | b668ecf77da8dd39c9441c42729dccf6
Red Hat Security Advisory 2018-1055-01
Posted Apr 10, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1055-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include improper input sanitization.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-7225
MD5 | ccc6f590e4cf829fa9b584eea12d583a
Ubuntu Security Notice USN-3618-1
Posted Apr 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3618-1 - It was discovered that LibVNCServer incorrectly handled certain packet lengths. A remote attacker able to connect to a LibVNCServer could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-7225
MD5 | 2737863066439e52d3e9ef732a321ce1
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