OverviewUbuntu 24.04 LTS is finally released and we cover all the new security featuresit brings, plus we look at security vulnerabilities in, and updates for,FreeRDP, Zabbix, CryptoJS, cpio, less, JSON5 and a heap more.
This week in Ubuntu Security Updates61 unique CVEs addressed
[USN-6749-1] FreeRDP vulnerabilities (00:45)* 7 CVEs addressed in Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10) + CVE-2024-32459 + CVE-2024-32460 + CVE-2024-32458 + CVE-2024-32041 + CVE-2024-32040 + CVE-2024-32039 + CVE-2024-22211 * Bunch of issues all reported by researcher from Kaspersky - usual sorts of issues in this package - written in C etc * OOB reads, heap buffer overflow, integer overflow / underflow -> OOB write
[USN-6752-1] FreeRDP vulnerabilities (01:41)* 4 CVEs addressed in Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10) + CVE-2024-32661 + CVE-2024-32660 + CVE-2024-32659 + CVE-2024-32658 * Not long after those - more CVEs announced * OOB read, NULL ptr deref and memory exhaustion
[USN-6657-2] Dnsmasq vulnerabilities (01:54)* 3 CVEs addressed in Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM) + CVE-2023-28450 + CVE-2023-50868 + CVE-2023-50387 * [USN-6657-1] Dnsmasq vulnerabilities from Episode 220
[USN-6743-3] Linux kernel (Azure) vulnerabilities (02:13)* 5 CVEs addressed in Jammy (22.04 LTS) + CVE-2023-52603 + CVE-2024-26581 + CVE-2024-26591 + CVE-2024-26589 + CVE-2023-52600
[USN-6750-1] Thunderbird vulnerabilities (02:19)* 8 CVEs addressed in Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10) + CVE-2024-3861 + CVE-2024-3859 + CVE-2024-3857 + CVE-2024-3854 + CVE-2024-3302 + CVE-2024-3864 + CVE-2024-3852 + CVE-2024-2609 * 115.10.1
[USN-6751-1] Zabbix vulnerabilities (02:54)* 2 CVEs addressed in Trusty ESM (14.04 ESM), Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS) + CVE-2022-35230 + CVE-2022-35229 * First time Zabbix has featured in the podcast! * Fixes 2 reflected XSS issues - in newer versions both require the attacker tobe able to specify the user’s specific CSRF token - but in older versions onlythere was only a session ID which is easier to guess
[USN-6753-1] CryptoJS vulnerability (03:38)* 1 CVEs addressed in Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS) + CVE-2023-46233 * Insecure default config - uses older parameters for the implementation ofPBKDF2 - SHA1 with a single iteration - makes any passwords protected viaPBKDF2 in crypto-js easier to brute-force from the hashed value - insteadupdated to use SHA256 with 250,000 rounds
[USN-6754-1] nghttp2 vulnerabilities (04:32)* 4 CVEs addressed in Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10) + CVE-2024-28182 + CVE-2023-44487 + CVE-2019-9513 + CVE-2019-9511 * Fixes for most recent issue in HTTP/2 (plus a few older HTTP/2 issues for ESMreleases - HTTP/2 Rapid Reset and 2 disclosed by Netflix back in 2019 which wecovered back in [USN-4099-1] nginx vulnerabilities from Episode 49 -all DoS attacks) * HTTP/2 continuation frames - no proper limit on the amount of these frameswhich can be sent in a single stream - attacker can send many to cause a DoSon the server either through CPU by lots of processing or memory by storingall these headers in memory
[USN-6755-1] GNU cpio vulnerabilities (05:42)* 1 CVEs addressed in Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10)
+ CVE-2023-7207
* Path traversal vuln - possible to write outside of the target directory
* Specific to Debian/Ubuntu etc since reverted part of the fix for historicCVE-2015-1197 - path traversal via inclusion of a malicious symlink in thearchive - since it broke the use of the --no-absolute-filenames CLI argument
* Was reverted back in 2.13+dfsg-2 - this was included in all releases of Ubuntusince focal
* Now use more correct fix from upstream (April 2023)
[USN-6756-1] less vulnerability (07:10)* 1 CVEs addressed in Trusty ESM (14.04 ESM), Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10), Noble (24.04 LTS)
+ CVE-2024-32487
* Second vuln in less in the last 10 weeks or so - [USN-6664-1] less vulnerability from Episode 220
* Similar issue - this time in the use of LESSOPEN environment variable - failedto properly quote newlines embedded in a filename - could then allow forarbitrary code execution if ran less on some untrusted file
* LESSOPEN is automatically set in Debian/Ubuntu via lesspipe - allows to runless on say a gz compressed log file or even on a tar.gz tarball to list thefiles etc
[USN-6757-1] PHP vulnerabilities (08:41)* 3 CVEs addressed in Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS)
+ CVE-2024-3096
+ CVE-2024-2756
+ CVE-2022-4900
* Incomplete fix for historic CVE-2022-31629 - ability for an attacker on thesame network/site could set a cookie via HTTP with one name, which then getsused by sessions using HTTPS and when using a different cookie name - is aproblem since certain cookie names (like __Host- and __Secure-) have specificmeanings which in general should be allowed to be specified by the network butonly by the browser itself - so can be used to bypass usual restrictions(apparently this issue was reported upstream by the original reported of the2022 vuln but it got ignored by upstream till now…)
* password_verify() function would sometimes return true for wrong passwords -ie if the actual password started with a NUL byte and the specified a passwordwas the empty string would verify as true (unlikely to be an issue in practice)
* Heap buffer overflow due to a large PHP_CLI_SERVER_WORKERS env var value -integer overflow -> wraparound -> allocate small amount of memory for a largenumber of values -> buffer overflow (low priority since would need to be ableto set this env var first)
[USN-6761-1] Anope vulnerability (11:15)* 1 CVEs addressed in Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10), Noble (24.04 LTS) + CVE-2024-30187 * Failed to deny ability to reset the password of a suspended account and hencegain access again
[USN-6758-1] JSON5 vulnerability (11:37)* 1 CVEs addressed in Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS)
+ CVE-2022-46175
* NodeJS module for the JSON5 format - “JSON for humans” - much more similar toyaml, does away with a lot of the usual quotes etc
* Protoype pollution vuln - when parsing would fail to restrict use of the__proto__ key and hence would allow the ability to set arbitrary keys etcwithin the returned object -> RCE
[LSN-0103-1] Linux kernel vulnerability (12:46)* 7 CVEs addressed in Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS) + CVE-2024-26597 + CVE-2024-1086 + CVE-2024-1085 + CVE-2024-0193 + CVE-2023-51781 + CVE-2023-6817 + CVE-2023-4569
| Kernel type | 22.04 | 20.04 | 18.04 | | --- | --- | --- | --- | | aws | 103.3 | 103.3 | — | | aws-5.15 | — | 103.3 | — | | aws-5.4 | — | — | 103.3 | | aws-6.5 | 103.1 | — | — | | azure | 103.3 | 103.3 | — | | azure-5.4 | — | — | 103.3 | | azure-6.5 | 103.1 | — | — | | gcp | 103.3 | 103.3 | — | | gcp-5.15 | — | 103.3 | — | | gcp-5.4 | — | — | 103.3 | | gcp-6.5 | 103.1 | — | — | | generic-5.15 | — | 103.3 | — | | generic-5.4 | — | 103.3 | 103.3 | | gke | 103.3 | 103.3 | — | | hwe-6.5 | 103.1 | — | — | | ibm | 103.3 | — | — | | ibm-5.15 | — | 103.3 | — | | linux | 103.3 | — | — | | lowlatency-5.15 | — | 103.3 | — | | lowlatency-5.4 | — | 103.3 | 103.3 |
canonical-livepatch status
[USN-6760-1] Gerbv vulnerability (13:01)* 1 CVEs addressed in Trusty ESM (14.04 ESM), Xenial ESM (16.04 ESM), Bionic ESM (18.04 ESM), Focal (20.04 LTS), Jammy (22.04 LTS), Mantic (23.10)
+ CVE-2023-4508
* Vuln found by the Ubuntu Security team - David and (former member) Andrei -Andrei found this whilst patching Gerbv back in 2023 and doing a bunch oftesting with ASan enabled - crafted filename -> crash
[USN-6759-1] FreeRDP vulnerabilities (13:41)* 5 CVEs addressed in Noble (24.04 LTS) + CVE-2024-32662 + CVE-2024-32661 + CVE-2024-32660 + CVE-2024-32659 + CVE-2024-32658
[USN-6737-2] GNU C Library vulnerability* 1 CVEs addressed in Noble (24.04 LTS) + CVE-2024-2961
[USN-6729-3] Apache HTTP Server vulnerabilities* 3 CVEs addressed in Noble (24.04 LTS) + CVE-2024-27316 + CVE-2024-24795 + CVE-2023-38709
[USN-6718-3] curl vulnerabilities* 2 CVEs addressed in Noble (24.04 LTS) + CVE-2024-2398 + CVE-2024-2004
[USN-6733-2] GnuTLS vulnerabilities* 2 CVEs addressed in Noble (24.04 LTS) + CVE-2024-28835 + CVE-2024-28834
[USN-6734-2] libvirt vulnerabilities* 2 CVEs addressed in Noble (24.04 LTS) + CVE-2024-2494 + CVE-2024-1441
[USN-6744-3] Pillow vulnerability* 1 CVEs addressed in Noble (24.04 LTS) + CVE-2024-28219
Goings on in Ubuntu Security CommunityUbuntu 24.04 LTS (Noble Numbat) released (14:27)* https://ubuntu.com/blog/canonical-releases-ubuntu-24-04-noble-numbat * https://ubuntu.com/blog/ubuntu-desktop-24-04-noble-numbat-deep-dive * https://ubuntu.com/blog/whats-new-in-security-for-ubuntu-24-04-lts * Up to 12 years of support via Ubuntu Pro + Legacy Support Add-on * New security features / improvements: + Unprivileged user namespace restrictions + Binary hardening + AppArmor 4 + Disabling of old TLS versions + Upstream Kernel Security Features - Intel shadow stack support - Secure virtualisation with AMD SEV-SNP and Intel TDX - Strict compile-time bounds checking
Get in contact* security@ubuntu.com * #ubuntu-security on the Libera.Chat IRC network * ubuntu-hardened mailing list * Security section on discourse.ubuntu.com * @ubuntusecurity@fosstodon.org, @ubuntu_sec on twitter