csaf_opensuse - opensuse-su-2025-20116-1

OPENSUSE-SU-2025-20116-1

Vulnerability from csaf_opensuse - Published: 2025-11-27 12:39 - Updated: 2025-11-27 12:39

Summary

Security update for rnp

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

CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).

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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

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

CWE

CWE-330 - Use of Insufficiently Random Values

Assigner

Ribose

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

	Vendor	Product	Version
	Ribose	RNP	Affected: 0.18.0

Credits

Johannes Roth (MTG AG)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

OPENSUSE-SU-2025-20116-1

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

Tags

Sightings

Nomenclature