systemd 250/251 shared/elf-util.c parse_elf_object deadlock

A vulnerability was found in systemd 250/251. It has been declared as problematic. This vulnerability affects the function parse_elf_object of the file shared/elf-util.c. The manipulation leads to deadlock. Using CWE to declare the problem leads to CWE-833. The weakness was released 11/24/2022. The advisory is available at github.com. This vulnerability was named CVE-2022-45873. An attack has to be approached locally. Technical details are available. There is no exploit available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment. It is declared as not defined. As 0-day the estimated underground price was around $0-$5k. The name of the patch is 076b807be472630692c5348c60d0c2b7b28ad437. The bugfix is ready for download at github.com. It is recommended to apply a patch to fix this issue. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

Timeline

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User

123

Field

exploit_price_0day1
vulnerability_cvss3_meta_tempscore1
vulnerability_cvss3_meta_basescore1
vulnerability_cvss3_vuldb_tempscore1
vulnerability_cvss3_vuldb_basescore1

Commit Conf

90%31
50%10

Approve Conf

90%31
80%10
IDCommitedUserFieldChangeRemarksAcceptedReasonC
1330463711/24/2022VulD...price_0day$0-$5ksee exploit price documentation11/24/2022accepted
90
1330463611/24/2022VulD...cvss3_meta_tempscore3.2see CVSS documentation11/24/2022accepted
90
1330463511/24/2022VulD...cvss3_meta_basescore3.3see CVSS documentation11/24/2022accepted
90
1330463411/24/2022VulD...cvss3_vuldb_tempscore3.2see CVSS documentation11/24/2022accepted
90
1330463311/24/2022VulD...cvss3_vuldb_basescore3.3see CVSS documentation11/24/2022accepted
90
1330463211/24/2022VulD...cvss2_vuldb_tempscore1.5see CVSS documentation11/24/2022accepted
90
1330463111/24/2022VulD...cvss2_vuldb_basescore1.7see CVSS documentation11/24/2022accepted
90
1330463011/24/2022VulD...cvss3_vuldb_eXderived from historical data11/24/2022accepted
80
1330462911/24/2022VulD...cvss2_vuldb_eNDderived from historical data11/24/2022accepted
80
1330462811/24/2022VulD...cvss2_vuldb_auSderived from historical data11/24/2022accepted
80
1330462711/24/2022VulD...cvss2_vuldb_rlOFderived from vuldb v3 vector11/24/2022accepted
80
1330462611/24/2022VulD...cvss2_vuldb_rcCderived from vuldb v3 vector11/24/2022accepted
80
1330462511/24/2022VulD...cvss2_vuldb_aiPderived from vuldb v3 vector11/24/2022accepted
80
1330462411/24/2022VulD...cvss2_vuldb_iiNderived from vuldb v3 vector11/24/2022accepted
80
1330462311/24/2022VulD...cvss2_vuldb_ciNderived from vuldb v3 vector11/24/2022accepted
80
1330462211/24/2022VulD...cvss2_vuldb_acLderived from vuldb v3 vector11/24/2022accepted
80
1330462111/24/2022VulD...cvss2_vuldb_avLderived from vuldb v3 vector11/24/2022accepted
80
1330462011/24/2022VulD...date1669244400 (11/24/2022)11/24/2022accepted
90
1330461911/24/2022VulD...cve_nvd_summarysystemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.cve.org11/24/2022accepted
90
1330461811/24/2022VulD...cve_assigned1669158000 (11/23/2022)cve.org11/24/2022accepted
90

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