CVE-2018-20096 Memory corruption in n/a
A heap-based buffer over-read in Exiv2 allows remote attackers to cause a denial of service via crafted PNG images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-20096?
CVE-2018-20096 is a medium-severity memory corruption vulnerability in Exiv2 Exiv2, published on 12 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
There is a heap-based buffer over-read in the Exiv2::tEXtToDataBuf function of pngimage.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.
Weakness: CWE-125
Which versions are affected by CVE-2018-20096?
1 open source package ship an affected version, including exiv2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
exiv2 PyPI | All versions | None |
Products include Exiv2 Exiv2.
How do I fix CVE-2018-20096?
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-2018-20096 being exploited?
There is no known exploitation of CVE-2018-20096 in the wild and no public exploit code.
Other vulnerabilities in Exiv2 Exiv2
Sources
Also known as GHSA-7vjg-25hq-7fgh, PYSEC-2018-117.