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CVE-2021-3761

Status Candidate

Overview

Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP "MaxLength" value, causing RTR sessions to terminate. An attacker can use this to disable RPKI Origin Validation in a victim network (for example AS 13335 - Cloudflare) prior to launching a BGP hijack which during normal operations would be rejected as "RPKI invalid". Additionally, in certain deployments RTR session flapping in and of itself also could cause BGP routing churn, causing availability issues.

Related Files

Debian Security Advisory 5041-1
Posted Jan 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5041-1 - Multiple vulnerabilities were discovered in Cloudflare's RPKI validator, which could result in denial of service or path traversal.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2021-3761, CVE-2021-3907, CVE-2021-3908, CVE-2021-3909, CVE-2021-3910, CVE-2021-3911, CVE-2021-3912, CVE-2021-43173, CVE-2021-43174
SHA-256 | 6501077000a8d7bd5cc465108de012893b05f400bec7e3756eb05f619b4e0f8e
Red Hat Security Advisory 2021-4173-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4173-03 - Exiv2 is a C++ library to access image metadata, supporting read and write access to the Exif, IPTC and XMP metadata, Exif MakerNote support, extract and delete methods for Exif thumbnails, classes to access Ifd, and support for various image formats. Issues addressed include buffer overflow, denial of service, information leakage, integer overflow, and out of bounds read vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2021-29457, CVE-2021-29458, CVE-2021-29463, CVE-2021-29464, CVE-2021-29470, CVE-2021-29473, CVE-2021-29623, CVE-2021-31292, CVE-2021-32617, CVE-2021-3482, CVE-2021-37618, CVE-2021-37619
SHA-256 | 6bc18f1b04334341fa83bb4d00bcafc004b61ba7ac6f0f48c6a2df33a8c4fdce
Red Hat Security Advisory 2021-4319-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4319-03 - Exiv2 is a C++ library to access image metadata, supporting read and write access to the Exif, IPTC and XMP metadata, Exif MakerNote support, extract and delete methods for Exif thumbnails, classes to access Ifd, and support for various image formats. Issues addressed include buffer overflow, denial of service, integer overflow, and out of bounds read vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2021-31292, CVE-2021-37618, CVE-2021-37619
SHA-256 | 2d5aaf75b2a5bd79663d6cb4cc446f8a1a1f3085c46a62d410587205c3f85f07
Ubuntu Security Notice USN-5043-1
Posted Aug 18, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5043-1 - It was discovered that Exiv2 incorrectly handled certain image files. An attacker could possibly use this issue to cause a denial of service. It was discovered that Exiv2 incorrectly handled certain image files. An attacker could possibly use this issue to cause a denial of service. These issues only affected Ubuntu 20.04 LTS and Ubuntu 21.04. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2021-32815, CVE-2021-37616, CVE-2021-37619, CVE-2021-37621
SHA-256 | 3ac5d046dc916ad450b4a05daee42e21ff86c2bfbdef34c36a1944a33ecff6a2
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