Vulnerabilities > CVE-2018-18820 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
A buffer overflow was discovered in the URL-authentication backend of the Icecast before 2.4.4. If the backend is enabled, then any malicious HTTP client can send a request for that specific resource including a crafted header, leading to denial of service and potentially remote code execution.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2018-B881073C43.NASL description This release fixes buffer overflows in URL authentication code (CVE-2018-18820), a crash in htpasswd authentication if no filename is set, a crash on xsltApplyStylesheet() error, and a crash on malformed Opus streams. It also corrects global listener counter. It stops displaying hashed user passwords for security concerns. It adds support for announcing Opus streams to YP catalogs. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2019-01-03 plugin id 120734 published 2019-01-03 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/120734 title Fedora 29 : icecast (2018-b881073c43) NASL family Fedora Local Security Checks NASL id FEDORA_2018-F3D995C6A8.NASL description This release fixes buffer overflows in URL authentication code (CVE-2018-18820), a crash in htpasswd authentication if no filename is set, a crash on xsltApplyStylesheet() error, and a crash on malformed Opus streams. It also corrects global listener counter. It stops displaying hashed user passwords for security concerns. It adds support for announcing Opus streams to YP catalogs. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2018-11-13 plugin id 118899 published 2018-11-13 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118899 title Fedora 27 : icecast (2018-f3d995c6a8) NASL family Fedora Local Security Checks NASL id FEDORA_2018-D4349A7BA3.NASL description This release fixes buffer overflows in URL authentication code (CVE-2018-18820), a crash in htpasswd authentication if no filename is set, a crash on xsltApplyStylesheet() error, and a crash on malformed Opus streams. It also corrects global listener counter. It stops displaying hashed user passwords for security concerns. It adds support for announcing Opus streams to YP catalogs. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2019-01-03 plugin id 120825 published 2019-01-03 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/120825 title Fedora 28 : icecast (2018-d4349a7ba3) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4333.NASL description Nick Rolfe discovered multiple buffer overflows in the Icecast multimedia streaming server which could result in the execution of arbitrary code. last seen 2020-06-01 modified 2020-06-02 plugin id 118722 published 2018-11-05 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118722 title Debian DSA-4333-1 : icecast2 - security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-360.NASL description This update for icecast fixes the following security issues : - CVE-2018-18820: A buffer overflow in url-auth could have potentially allowed remote code execution (boo#1114434) last seen 2020-05-31 modified 2019-03-27 plugin id 123170 published 2019-03-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123170 title openSUSE Security Update : icecast (openSUSE-2019-360) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1588.NASL description A buffer overflow was discovered in the URL-authentication backend of the icecast2, the popular open source streaming media server. If the backend is enabled, then any malicious HTTP client can send a request for specific resource including a crafted header which can overwrite the server last seen 2020-06-01 modified 2020-06-02 plugin id 119151 published 2018-11-27 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119151 title Debian DLA-1588-1 : icecast2 security update NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201811-09.NASL description The remote host is affected by the vulnerability described in GLSA-201811-09 (Icecast: Arbitrary code execution) Multiple buffer overflows have been discovered in Icecast. Please review the CVE identifier referenced below for details. Impact : A remote attacker, by sending a specially crafted request using authentication type “url”, could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 124215 published 2019-04-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124215 title GLSA-201811-09 : Icecast: Arbitrary code execution NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-1395.NASL description This update for icecast fixes the following security issues : - CVE-2018-18820: A buffer overflow in url-auth could have potentially allowed remote code execution (boo#1114434) last seen 2020-06-05 modified 2018-11-14 plugin id 118951 published 2018-11-14 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118951 title openSUSE Security Update : icecast (openSUSE-2018-1395)