01 Record

CVE-2022-48303

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The

MediumPUBLISHEDCNA: mitre

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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02 Description

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 73.7% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-14.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2023-01-30 00:00Z3 YR AGO

Last updated

2026-10-14 18:44Z14 DAYS AGO

Reserved

2023-01-30

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

35b972fe9dc5a69644ebbfa0e7b1c1660baa175893f303cc038c5cc1025bcc0b

05 Affected products

VendorProductVersionsPlatforms

fedoraprojectfedoraNot specified—

gnutarNot specified—

redhatenterprise_linuxNot specified—

redhatrhel_eusNot specified—

06 References

savannah.gnu.orghttps://savannah.gnu.org/bugs/?62387
savannah.gnu.orghttps://savannah.gnu.org/patch/?10307
lists.fedoraproject.orgFEDORA-2023-123778d70dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CRY7VEL4AIG3GLIEVCTOXRZNSVYDYYUD/vendor-advisory
lists.fedoraproject.orgFEDORA-2023-f72d3caf36https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X5VQYCO52Z7GAVCLRYUITN7KXHLRZQS4/vendor-advisory
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-806742.html

07 Fixed in

AlmaLinux 8

tar
Fixed in 2:1.30-6.el8_7.1

AlmaLinux 9

tar
Fixed in 2:1.34-6.el9_1

CloudLinux 8

tar
Fixed in 2:1.30-6.el8_7.1

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

CloudLinux 9

tar
Fixed in 2:1.34-6.el9_1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Debian 12

tar
Fixed in 1.34+dfsg-1.2+deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

tar
Fixed in 1.34+dfsg-1.4

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

tar
Fixed in 1.34+dfsg-1.4

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.