CVE-2019-20387 Memory corruption in n/a
A heap-based buffer over-read in libsolv allows attackers to cause denial of service or disclose sensitive memory contents via crafted repository data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-20387?
CVE-2019-20387 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 21 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the length of the input schema.
Weakness: CWE-125
Which versions are affected by CVE-2019-20387?
It affects 2 products.
Linux distribution packages (9)
libsolv Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
libsolv-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
libsolv-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
libsolv-demo-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
libsolv-tools-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
perl-solv-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
python3-solv Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
python3-solv-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
ruby-solv-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:0.7.11-1.el8 |
Products include Debian Debian Linux, Opensuse Libsolv.
How do I fix CVE-2019-20387?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-20387 being exploited?
There is no known exploitation of CVE-2019-20387 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2019-20387, DLA-2088-1, GHSA-vvx2-pj87-xmpx, MGASA-2020-0117, RHSA-2020:4508, UBUNTU-CVE-2019-20387.