CVE-2021-3200 Memory corruption in n/a

Low 3.3 Published 18 May 2021 Updated 3 Aug 2024

A buffer overflow in the libsolv library allows attackers to cause a denial of service via a crafted testcase file.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2021-3200?

CVE-2021-3200 is a low-severity memory corruption vulnerability in Oracle Communications Cloud Native Core Policy, published on 18 May 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp, const char *testcase, Queue *job, char **resultp, int *resultflagsp function at src/testcase.c: line 2334, which could cause a denial of service

Weakness: CWE-120

Which versions are affected by CVE-2021-3200?

It affects 2 products.

Linux distribution packages (21)

`libsolv-devel` AlmaLinux:8	All versions	`0.7.19-1.el8`
`libsolv-tools` AlmaLinux:8	All versions	`0.7.19-1.el8`
`libsolv` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`libsolv-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`libsolv-debugsource` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`libsolv-demo-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`libsolv-tools-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`perl-solv-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`python3-solv` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`python3-solv-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`ruby-solv-debuginfo` Red Hat:enterprise_linux:8::baseos	All versions	`0:0.7.19-1.el8`
`libsolv-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv-debugsource` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv-demo-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv-devel` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv-tools` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv-tools-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`perl-solv-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`python3-solv-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`ruby-solv-debuginfo` Red Hat:enterprise_linux:8::crb	All versions	`0:0.7.19-1.el8`
`libsolv` Rocky Linux:8	All versions	`0:0.7.19-1.el8`

Products include Opensuse Libsolv, Oracle Communications Cloud Native Core Policy.

How do I fix CVE-2021-3200?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-3200 being exploited?

There is no known exploitation of CVE-2021-3200 in the wild and no public exploit code.

All Oracle Communications Cloud Native Core Policy vulnerabilities

Sources

Also known as ALSA-2021:4408, CVE-2021-44569, CVE-2021-44570, CVE-2021-44571, CVE-2021-44573, CVE-2021-44574 and 10 more.