NULL pointer dereference in Perl Dbi
CVE-2019-20919
An issue was discovered in the DBI module before 1.643 for Perl. The hv_fetch() documentation requires checking for NULL and the code does that. But, shortly thereafter, it calls SvOK(profile), causing a NULL pointer dereference.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Perl Dbi
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 31
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
References
- metacpan.org/pod/distribution/DBI/Changes (Third Party Advisory)
- github.com/perl5-dbi/dbi/commit/eca7d7c8f43d96f6277e86d1000e842eb4cc67ff (Patch, Third Party Advisory)
- usn.ubuntu.com/4534-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/09/msg00026.html (mailing-list, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00012.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00013.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20919?
- CVE-2019-20919 is a medium-severity vulnerability in Perl Dbi, classified under NULL Pointer Dereference. CVSS score: 4.7/10. Published 2020-09-17.
- How severe is CVE-2019-20919?
- Medium severity. CVSS v3 base score is 4.7 out of 10.