Vulnerability-Lookup

OPENSUSE-SU-2025:20116-1

Vulnerability from csaf_opensuse - Published: 2025-11-27 12:39 - Updated: 2026-09-20 21:48

Summary

Security update for rnp

Severity

Moderate

Notes

Title of the patch: Security update for rnp

Description of the patch: This update for rnp fixes the following issues: - update to 0.18.1: * CVE-2025-13470: PKESK (public-key encrypted) session keys were generated as all-zero, allowing trivial decryption of messages encrypted with public keys only (boo#1253957, CVE-2025-13402)

Patchnames: openSUSE-Leap-16.0-packagehub-32

CVE-2025-13402

Affected products

Recommended 12 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:librnp0-0:0.18.1-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:librnp0-0:0.18.1-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:librnp0-0:0.18.1-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:librnp0-0:0.18.1-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-0:0.18.1-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-0:0.18.1-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-0:0.18.1-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-0:0.18.1-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-devel-0:0.18.1-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-devel-0:0.18.1-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-devel-0:0.18.1-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:rnp-devel-0:0.18.1-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2025-13470

Affected products

Recommended 12 products, the same list as for CVE-2025-13402

Threats

Impact important

References

9 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1253957	self
https://www.suse.com/security/cve/CVE-2025-13402/	self
https://www.suse.com/security/cve/CVE-2025-13470/	self
https://www.suse.com/security/cve/CVE-2025-13402	external
https://bugzilla.suse.com/1253957	external
https://www.suse.com/security/cve/CVE-2025-13470	external
https://bugzilla.suse.com/1253957	external

JSON

To clipboard

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          "text": "In RNP version 0.18.0 a refactoring regression causes the symmetric \nsession key used for Public-Key Encrypted Session Key (PKESK) packets to\n be left uninitialized except for zeroing, resulting in it always being \nan all-zero byte array.\n\nAny data encrypted using public-key encryption \nin this release can be decrypted trivially by supplying an all-zero \nsession key, fully compromising confidentiality.\n\nThe vulnerability affects only public key encryption (PKESK packets).   Passphrase-based encryption (SKESK packets) is not affected.\n\nRoot cause: Vulnerable session key buffer used in PKESK packet generation.\n\n\n\nThe defect was introduced in commit `7bd9a8dc356aae756b40755be76d36205b6b161a` where initialization \nlogic inside `encrypted_build_skesk()` only randomized the key for the \nSKESK path and omitted it for the PKESK path.",
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CVE-2025-13470 (GCVE-0-2025-13470)

Vulnerability from cvelistv5 – Published: 2025-11-21 17:05 – Updated: 2025-11-21 17:35

Title

RNP 0.18.0 Vulnerable PKESK session keys

Summary

In RNP version 0.18.0 a refactoring regression causes the symmetric session key used for Public-Key Encrypted Session Key (PKESK) packets to be left uninitialized except for zeroing, resulting in it always being an all-zero byte array. Any data encrypted using public-key encryption in this release can be decrypted trivially by supplying an all-zero session key, fully compromising confidentiality. The vulnerability affects only public key encryption (PKESK packets). Passphrase-based encryption (SKESK packets) is not affected. Root cause: Vulnerable session key buffer used in PKESK packet generation. The defect was introduced in commit `7bd9a8dc356aae756b40755be76d36205b6b161a` where initialization logic inside `encrypted_build_skesk()` only randomized the key for the SKESK path and omitted it for the PKESK path.

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:Y/RE:H/U:Red

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-21 17:35 UTC

CWE

CWE-330 - Use of Insufficiently Random Values

Assigner

Ribose mitre root Scorecard

References

8 references

URL	Tags
https://github.com/rnpgp/rnp/commit/7bd9a8dc356aa…	related
https://launchpad.net/ubuntu/+source/rnp	x_downstream-package
https://aur.archlinux.org/packages/rnp	x_downstream-package
https://packages.gentoo.org/packages/dev-util/librnp	x_downstream_package
https://bugzilla.redhat.com/show_bug.cgi?id=2415863	issue-tracking
https://access.redhat.com/security/cve/cve-2025-13402	third-party-advisory
https://open.ribose.com/advisories/ra-2025-11-20/	vendor-advisory
https://github.com/rnpgp/rnp/releases/tag/v0.18.1	release-notes

Impacted products

1 product

Vendor	Product	Version
Ribose	RNP	Affected: 0.18.0

Date Public

2025-11-21 00:00

Credits

Johannes Roth (MTG AG)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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OPENSUSE-SU-2025:20116-1

CVE-2025-13470 (GCVE-0-2025-13470)

Tags

Sightings

Nomenclature

Related by attack behaviour