4.9

CVE-2019-19269: debian debian_linux NULL Pointer Dereference

Modified
AliasesMGASA-2019-0385UBUNTU-CVE-2019-19269DEBIAN-CVE-2019-19269
Published 26-11-2019Last modified 05-08-2024

Vulnerability summary

CVE-2019-19269 is a medium (CVSS 4.9) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 1.65% chance of exploitation in the next 30 days, higher than 76.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.9/10
010
Medium · v3.1 (NVD)
EPSS score
1.65%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2020:0031-1OPENSUSE-SU-2024:11196-1

Timeline

  1. 26-11-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.65%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.65% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • proftpd-dfsg< 1.3.6b-2 | < 1.3.5e+r1.3.5-2+deb8u5
  • debian_linuxEOL8.0
Fedoraproject1 product
Mageia1 product
  • proftpd< 1.3.5e-4.2.mga7
Proftpd1 product
  • proftpdEOL≤ 1.3.5e | 1.3.6 | 1.3.6:alpha | 1.3.6:beta | 1.3.6:rc1 | 1.3.6:rc2 | 1.3.6:rc3 | 1.3.6:rc4
Ubuntu1 product
  • proftpd-dfsgAll versions (No fix recorded)

5 vendors · 6 products

References

13 links
Show all 13 references