Vulnerability · Published Feb 23, 2021 · Assigned by redhat
CVE-2020-27819
Medium 5.5
In plain English
A medium-severity null pointer dereference in libxls. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.8%top 42.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | r-cran-readxl | no fix listed | UBUNTU-CVE-2020-27819 |
| Ubuntu:24.04:LTS | r-cran-readxl | no fix listed | UBUNTU-CVE-2020-27819 |
| Ubuntu:25.10 | r-cran-readxl | no fix listed | UBUNTU-CVE-2020-27819 |
| Ubuntu:26.04:LTS | r-cran-readxl | no fix listed | UBUNTU-CVE-2020-27819 |
| Ubuntu:26.10 | r-cran-readxl | no fix listed | UBUNTU-CVE-2020-27819 |
Affected products (as reported)
Weakness: CWE-476
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1903296 x_refsource_MISC