HOMEVULNERABILITIESCVE-2018-18820
HIGH

CVE-2018-18820

CWE-119Published: November 5, 2018· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2018-18820 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
xiph1 product(s)
icecast
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2018/11/01/3
PATCHhttp://www.openwall.com/lists/oss-security/2018/11/01/3
ADVISORYhttp://www.securitytracker.com/id/1042019
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00033.html
ADVISORYhttps://security.gentoo.org/glsa/201811-09
ADVISORYhttps://www.debian.org/security/2018/dsa-4333
ADVISORYhttp://www.securitytracker.com/id/1042019
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/11/msg00033.html
ADVISORYhttps://security.gentoo.org/glsa/201811-09
ADVISORYhttps://www.debian.org/security/2018/dsa-4333

All References (10)

→
http://www.openwall.com/lists/oss-security/2018/11/01/3Mailing List · Patch · Third Party Advisory
→
http://www.securitytracker.com/id/1042019Third Party Advisory · VDB Entry
→
https://lists.debian.org/debian-lts-announce/2018/11/msg00033.htmlThird Party Advisory
→
https://security.gentoo.org/glsa/201811-09Mitigation · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4333Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2018/11/01/3Mailing List · Patch · Third Party Advisory
→
http://www.securitytracker.com/id/1042019Third Party Advisory · VDB Entry
→
https://lists.debian.org/debian-lts-announce/2018/11/msg00033.htmlThird Party Advisory
→
https://security.gentoo.org/glsa/201811-09Mitigation · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4333Third Party Advisory

Quick Facts

CVE IDCVE-2018-18820
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedNov 5, 2018

Related CVEs (CWE-119)

CVE-2011-0264
10.0
CVE-2012-0243
10.0
CVE-2011-0262
10.0
CVE-2011-0263
10.0
CVE-2011-0265
10.0
CVE-2015-3870
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-18820 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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