CVE-2020-29130

Exp

slirp.c in libslirp through 4.3.1 has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.

Published: 2020-11-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-29130 is rated Exploit Available (56.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.57%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-29130

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-29130

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 0.47% 0.57% +0.10%
2 2026-03-24 0.45% 0.47% +0.02%
3 2026-03-16 — 0.45% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-29130

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2020-29130

OS Trackers for CVE-2020-29130

vendor priority summary link
alpine medium CVE-2020-29130: 1 source package rows (libslirp); 11 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 4. https://security.alpinelinux.org/vuln/CVE-2020-29130
debian not yet assigned CVE-2020-29130 not yet assigned priority: Debian including 2 source packages (libslirp, qemu), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2020-29130
redhat low — https://access.redhat.com/security/cve/CVE-2020-29130
suse medium CVE-2020-29130 severity moderate: SUSE including 865 source package names (0.38.1.5.8.40:qemu-4.2.1-11.16.3, 0.38.1.5.8.40:qemu-ipxe-1.0.0+-11.16.3, …), 1543 product×package rows across 104 product lines (Container suse/sle-micro-rancher/5.2, Container suse/sles/15.2/virt-handler, … (104 product lines)): Fixed 1204, Known Affected 231, Known Not Affected 108. https://www.suse.com/security/cve/CVE-2020-29130/
ubuntu low CVE-2020-29130 low priority: Ubuntu including 3 source packages (libslirp, qemu, qemu-kvm), 27 status rows across 9 suites (bionic, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): DNE 11, not-affected 11, released 3, needs-triage 2. https://ubuntu.com/security/CVE-2020-29130

Affected software / configurations for CVE-2020-29130

Vendor Product Version Raw CPE
libslirp_project libslirp <= 4.3.1 cpe:2.3:a:libslirp_project:libslirp:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraproject fedora 33 cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

References for CVE-2020-29130

cvelogic Threat Intelligence