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CVE-2024-32487

21
FAUCET Score

CVE-2024-32487 is a high-severity OS command injection vulnerability in the 'less' utility (versions prior to 653), affecting Debian, Greenwood Software, and NetApp products. It allows an attacker to execute arbitrary commands by crafting a malicious filename containing a newline character, which is mishandled during quoting. Exploitation requires user interaction (e.g., opening a malicious file from an untrusted archive) and the LESSOPEN environment variable, which is often set by default. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 653CPE matchmatch criteria
cpe:2.3:a:greenwoodsoftware:less:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:hci_storage_nodes:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 45th percentile among its peer group of 11,616 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (22)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 643-2
microsoftpatch availablevia msrc
Product: 17756-17084Fixed in: 643-2
microsoftpatch availablevia msrc
Product: 19896-17086Fixed in: 590-4
microsoftpatch availablevia msrc
Product: azl3 less 643-2 on Azure Linux 3.0Fixed in: 643-2
microsoftpatch availablevia msrc
Product: cbl2 less 590-4 on CBL Mariner 2.0Fixed in: 590-4
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 590-4
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 590-4
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 643-2
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: less-0:530-3.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: less-0:530-3.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: less-0:590-4.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: less-0:590-2.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: less-0:590-3.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: less-0:458-10.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: less-0:530-3.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: less-0:530-2.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: less-0:530-2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: less-0:530-2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: less-0:530-2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: less-0:530-3.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: less-0:530-3.el8_6
View patch

Vendor Advisories (3)

microsoft2024-Jul/CVE-2024-32487

CVE-2024-32487

Jul 9, 2024
redhatCVE-2024-32487Important

less: OS command injection

Apr 13, 2024
microsoft2024-Apr/CVE-2024-32487Important

less through 653 allows OS command execution via a newline character in the name of a file because quoting is mishandled in filename.c. Exploitation typically requires use with attacker-controlled file names such as the files extracted from an untrusted archive. Exploitation also requires the LESSOPEN environment variable but this is set by default in many common cases.

Apr 9, 2024

References

github.com / gwsw/less/commit/007521ac3c95bc76e3d59c6dbfe75d06c8075c33
Patch
lists.debian.org / debian-lts-announce/2024/05/msg00018.html
Mailing List
security.netapp.com / advisory/ntap-20240605-0009
Vendor Advisory
openwall.com / lists/oss-security/2024/04/12/5
Mailing List
openwall.com / lists/oss-security/2024/04/13/2
Mailing ListPatch
openwall.com / lists/oss-security/2024/04/15/1
Mailing List