Use After Free in Libslirp Project
CVE-2020-1983
A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
Vulnerability class: Use-After-Free
EPSS: 0.023 (81.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Libslirp_project Libslirp
- Slirp Libslirp — versions unspecified
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.10
- Debian Debian_linux — versions 8.0, 9.0
- Fedoraproject Fedora — versions 31, 32
- Opensuse Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@paloaltonetworks.com (Exploit, Third Party Advisory, x_refsource_MISC)
- psirt@paloaltonetworks.com (Patch, Third Party Advisory, x_refsource_MISC)
- psirt@paloaltonetworks.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- psirt@paloaltonetworks.com (x_refsource_FEDORA, vendor-advisory)
- psirt@paloaltonetworks.com (x_refsource_FEDORA, vendor-advisory)
- psirt@paloaltonetworks.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- psirt@paloaltonetworks.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- psirt@paloaltonetworks.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- psirt@paloaltonetworks.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- psirt@paloaltonetworks.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1983?
- CVE-2020-1983 is a high-severity vulnerability in Libslirp Project, classified under Use After Free. CVSS score: 7.5/10. Published 2020-04-22.
- How severe is CVE-2020-1983?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-1983 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.