openslp: Reflective denial of service amplification attack via UDP
CVSS score
7.5
EPSS probability
%64.0
Risk score
9.6
Published
3 y ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2023-29552 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
.The Service Location Protocol (SLP) is vulnerable to an attack through UDP The OpenSLP provides a dynamic configuration mechanism for applications in local area networks, such as printers and file servers. However, SLP is vulnerable to a reflective denial of service amplification attack through UDP on systems connected to the internet. SLP allows an unauthenticated attacker to register new services without limits set by the SLP implementation. By using UDP and spoofing the source address, an attacker can request the service list, creating a Denial of Service on the spoofed address. To prevent external attackers from accessing the SLP service, disable SLP on all systems running on untrusted networks, such as those directly connected to the internet. Alternatively, to work around this problem, configure firewalls to block or filter traffic on UDP and TCP port 427.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2023-29552 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | red_hat_enterprise_linux_6:openslp | View |
| 2 | Red Hat | red_hat_enterprise_linux_6:openslp-devel | View |
| 3 | Red Hat | red_hat_enterprise_linux_6:openslp-server | View |
| 4 | Red Hat | red_hat_enterprise_linux_6:openslp.src | View |
| 5 | Red Hat | red_hat_enterprise_linux_7:openslp | View |
| 6 | Red Hat | red_hat_enterprise_linux_7:openslp-devel | View |
| 7 | Red Hat | red_hat_enterprise_linux_7:openslp-server | View |
| 8 | Red Hat | red_hat_enterprise_linux_7:openslp.src | View |
| 9 | Red Hat | red_hat_enterprise_linux_9:openslp | View |
| 10 | Red Hat | red_hat_enterprise_linux_9:openslp-devel | View |
| 11 | Red Hat | red_hat_enterprise_linux_9:openslp-server | View |
| 12 | ietf | Service Location Protocol (SLP) | View |
RED HAT CSAF/VEX: Product Impact Check
Does this CVE affect my Red Hat product?
The results come directly from the Red Hat CSAF VEX product status; they are not estimates.
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Out of support scope
Will not fix
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.5 | cvss_v3 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | Red Hat |
Patch and Remediation Guide
Solution & Remediation Advisory
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Out of support scope
Will not fix
Apply mitigations per vendor instructions or disable SLP service or port 427/UDP on all systems running on untrusted networks, including those directly connected to the Internet.
Public exploit and active exploitation status
Verified exploit intelligence
This CVE is marked as actively exploited in the CISA KEV catalogue, but no verified, downloadable public PoC or Metasploit module has been found yet. Evidence of active exploitation does not mean that public exploit code exists.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-29552 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-29552 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
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