Libslirp · Libslirp · CVE-2020-7039
**Name of the Vulnerable Software and Affected Versions**
QEMU versions 4.2.0
libslirp version 4.1.0
**Description**
The issue is related to a memory management error in the `tcp emu` function of the QEMU software, which can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service. This can lead to a heap-based buffer overflow or other out-of-bounds access, potentially allowing the execution of arbitrary code. The vulnerability is demonstrated by IRC DCC commands in EMU IRC.
**Recommendations**
For QEMU version 4.2.0, consider updating to a newer version that addresses the memory management issue in the `tcp emu` function.
For libslirp version 4.1.0, as a temporary workaround, consider restricting access to the `tcp subr.c` module until a patch is available.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.