Heap-based buffer overflow in libslirp - CVE-2019-14378

Vulnerability identifier: #VU20446

CSH Severity: Medium

CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-14378

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the ip_reass() function in ip_input.c in libslirp. A remote authenticated attacker can send a large packet, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

libslirp
Amazon Linux AMI
Red Hat Enterprise Linux for Scientific Computing
CentOS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Power
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Opensuse
Fedora
qemu (Ubuntu package)
qemu (Debian package)
qemu-kvm-rhev (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
slirp4netns (Red Hat package)
qemu-kvm (Red Hat package)
qemu-kvm-ma (Red Hat package)
libslirp
Red Hat Virtualization
Red Hat Virtualization for IBM Power LE
Red Hat Virtualization Manager
Red Hat OpenStack
Red Hat OpenStack for IBM Power
Juniper Junos Space

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

qemu (Ubuntu package) - addressed in versions 1:2.5+dfsg-5ubuntu10.42, 1:2.11+dfsg-1ubuntu7.20, 1:3.1+dfsg-2ubuntu3.6, 1:4.0+dfsg-0ubuntu9.1
qemu (Debian package) - addressed in versions 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8+deb10u2
qemu-kvm-rhev (Red Hat package) - addressed in versions 2.12.0-18.el7_6.11, 2.12.0-44.el7
slirp4netns (Red Hat package) - update to 0.3.0-8.el7_7
qemu-kvm (Red Hat package) - update to 1.5.3-160.el7_6.6
qemu-kvm-ma (Red Hat package) - update to 2.12.0-18.el7_6.6
libslirp - update to 4.0.0-2.fc30
Juniper Junos Space - update to 20.3R1

• http://www.openwall.com/lists/oss-security/2019/08/01/2
• https://gitlab.freedesktop.org/slirp/libslirp/commit/126c04acbabd7ad32c2b018fe10dfac2a3bc1210
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPLHB2AN663OXAWUQURF7J2X5LHD4VD3/

• Debian update for qemu
• OpenSUSE Linux update for qemu
• OpenSUSE Linux update for qemu
• Debian update for qemu
• Red Hat update for qemu-kvm-rhev
• Red Hat update for container-tools:1.0
• Red Hat update for container-tools:rhel8
• Red Hat update for qemu-kvm-rhev
• Red Hat update for qemu-kvm-rhev
• OpenSUSE Linux update for qemu
• Ubuntu update for QEMU
• Red Hat update for qemu-kvm-ma
• Red Hat update for qemu-kvm-rhev
• Red Hat update for qemu-kvm
• Red Hat Enterprise Linux 6 update for qemu-kvm
• CentOS 6 update for qemu-kvm
• Red Hat Virtualization 4 update for qemu-kvm-rhev
• Red Hat Enterprise Linux 7 update for qemu-kvm-ma
• Red Hat Enterprise Linux 7 update for qemu-kvm
• Red Hat Virtualization for Red Hat Virtualization Host 7 update for qemu-kvm-rhev
• Amazon Linux AMI update for qemu-kvm
• Multiple vulnerabilities in Juniper Junos Space
• Red Hat Enterprise Linux 7 Extras update for slirp4netns
• Red Hat Enterprise Linux 8 update for the virt:rhel module
• Fedora 30 update for libslirp