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debianDebianDEBIAN:DSA-4905-1:29D86
HistoryApr 27, 2021 - 7:40 p.m.

[SECURITY] [DSA 4905-1] shibboleth-sp security update

2021-04-2719:40:55
lists.debian.org
37
shibboleth-sp
cve-2021-31826
null pointer
denial of service
debian
security update
cookie-based session

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

65.0%


Debian Security Advisory DSA-4905-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
April 27, 2021 https://www.debian.org/security/faq


Package : shibboleth-sp
CVE ID : CVE-2021-31826
Debian Bug : 987608

It was discovered that the Shibboleth Service Provider is prone to a
NULL pointer dereference flaw in the cookie-based session recovery
feature. A remote, unauthenticated attacker can take advantage of this
flaw to cause a denial of service (crash in the shibd daemon/service).

For additional information please refer to the upstream advisory at
https://shibboleth.net/community/advisories/secadv_20210426.txt

For the stable distribution (buster), this problem has been fixed in
version 3.0.4+dfsg1-1+deb10u2.

We recommend that you upgrade your shibboleth-sp packages.

For the detailed security status of shibboleth-sp please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/shibboleth-sp

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

65.0%