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CVE-2020-9274

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been...

7.5 HighFix available

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

6.01%Up 4.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
CVE-2020-9274
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-824
Updated
2026-11-02
CVE List No score

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
CVE-2020-9274
Updated
2026-11-02
EUVDEUVD-2020-30103 No score

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
EUVD-2020-30103
Updated
2026-11-03
GitHub AdvisoriesGHSA-26hm-gghq-x5rr 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been...

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
GHSA-26hm-gghq-x5rr
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-824
Updated
2026-11-02
OSVALPINE-CVE-2020-9274 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
ALPINE-CVE-2020-9274
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-03
OSV 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
CVE-2020-9274
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2020-9274 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
DEBIAN-CVE-2020-9274
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2020-9274 7.5

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Record
UBUNTU-CVE-2020-9274
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2024:11773-1 No score

pure-ftpd-1.0.50-1.1 on GA media

These are all security issues fixed in the pure-ftpd-1.0.50-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11773-1
Updated
2026-11-02
OSVUSN-4515-1 No score

pure-ftpd vulnerability

Antonio Norales discovered that Pure-FTPd incorrectly handled directory aliases. An attacker could possibly use this issue to access sensitive information. (CVE-2020-9274)

Record
USN-4515-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
pure-ftpd
Alpine:v3.16
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.17
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.18
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.19
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.20
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.21
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.22
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.23
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Alpine:v3.24
 before 1.0.49-r1
1.0.49-r1
pure-ftpd
Debian:12
 before 1.0.49-4
1.0.49-4
Show 5 moreShow less
Affected packages
PackageAffectedFixed
pure-ftpd
Debian:13
 before 1.0.49-4
1.0.49-4
pure-ftpd
Debian:8
 before 1.0.36-3.2+deb8u1, plus listed versions
1.0.36-3.2
1.0.36-3.2+deb8u1
pure-ftpd
Ubuntu:16.04:LTS
 before 1.0.36-3.2+deb8u1build0.16.04.1, plus listed versions
1.0.36-3.21.0.36-3.2build1
1.0.36-3.2+deb8u1build0.16.04.1
pure-ftpd
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.0.46-11.0.46-1build11.0.46-1ubuntu18.04.1
 None known
pure-ftpd
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 1.0.50-1.1
1.0.50-1.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
NucleiPure-FTPd ≤ 1.0.49 - DoS via Uninitialized Pointer

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-9274 is a high vulnerability (CVSS 7.5) in Pureftpd Pure-ftpd, published February 26, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.01%, the 93rd percentile. Fixed in pure-ftpd 1.0.49-r1.

References

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